feat: add preset to pipe table configuration

## Details

Adds a preset field to the pipe_table configuration. The only value that
does something currently is 'round' which sets the border to rounded
characters rather than using right angles.

Will likely add more values in the future since configuring a border is
currently pretty verbose. User values still take precedence.

Is currently pretty naive how overall preset and pipe table preset are
combined since they do not share any values. If this changes then
precedence will need to be established and will need to do some
tbl_deep_extend type logic.

Author: MeanderingProgrammer

Diff for: README.md

@@ -399,6 +399,10 @@ require('render-markdown').setup({
     pipe_table = {
         -- Turn on / off pipe table rendering
         enabled = true,
+        -- Pre configured settings largely for setting table border easier
+        --  round: use round border characters rather than right angles
+        --  none: does nothing
+        preset = 'none',
         -- Determines how the table as a whole is rendered:
         --  none: disables all rendering
         --  normal: applies the 'cell' style rendering to each row of the table
@@ -752,6 +756,10 @@ require('render-markdown').setup({
     pipe_table = {
         -- Turn on / off pipe table rendering
         enabled = true,
+        -- Pre configured settings largely for setting table border easier
+        --  round: use round border characters rather than right angles
+        --  none: does nothing
+        preset = 'none',
         -- Determines how the table as a whole is rendered:
         --  none: disables all rendering
         --  normal: applies the 'cell' style rendering to each row of the table

Diff for: doc/render-markdown.txt

@@ -428,6 +428,10 @@ Full Default Configuration ~
         pipe_table = {
             -- Turn on / off pipe table rendering
             enabled = true,
+            -- Pre configured settings largely for setting table border easier
+            --  round: use round border characters rather than right angles
+            --  none: does nothing
+            preset = 'none',
             -- Determines how the table as a whole is rendered:
             --  none: disables all rendering
             --  normal: applies the 'cell' style rendering to each row of the table
@@ -793,6 +797,10 @@ Wiki Page
         pipe_table = {
             -- Turn on / off pipe table rendering
             enabled = true,
+            -- Pre configured settings largely for setting table border easier
+            --  round: use round border characters rather than right angles
+            --  none: does nothing
+            preset = 'none',
             -- Determines how the table as a whole is rendered:
             --  none: disables all rendering
             --  normal: applies the 'cell' style rendering to each row of the table

Diff for: lua/render-markdown/health.lua

@@ -5,7 +5,7 @@ local M = {}
 
 ---@private
 ---@type string
-M.version = '6.0.11'
+M.version = '6.0.12'
 
 function M.check()
     vim.health.start('render-markdown.nvim [version]')

Diff for: lua/render-markdown/init.lua

@@ -38,11 +38,13 @@ local M = {}
 ---@field public highlight? string
 ---@field public custom? table<string, render.md.UserLinkComponent>
 
+---@alias render.md.table.Preset 'none'|'round'
 ---@alias render.md.table.Style 'full'|'normal'|'none'
 ---@alias render.md.table.Cell 'padded'|'raw'|'overlay'
 
 ---@class (exact) render.md.UserPipeTable
 ---@field public enabled? boolean
+---@field public preset? render.md.table.Preset
 ---@field public style? render.md.table.Style
 ---@field public cell? render.md.table.Cell
 ---@field public border? string[]
@@ -423,6 +425,10 @@ M.default_config = {
     pipe_table = {
         -- Turn on / off pipe table rendering
         enabled = true,
+        -- Pre configured settings largely for setting table border easier
+        --  round: use round border characters rather than right angles
+        --  none: does nothing
+        preset = 'none',
         -- Determines how the table as a whole is rendered:
         --  none: disables all rendering
         --  normal: applies the 'cell' style rendering to each row of the table

Diff for: lua/render-markdown/presets.lua

@@ -4,7 +4,15 @@ local M = {}
 ---@param user_config render.md.UserConfig
 ---@return render.md.UserConfig
 function M.get(user_config)
-    local name = user_config.preset
+    local config = M.config_preset(user_config.preset)
+    config.pipe_table = M.pipe_table_preset((user_config.pipe_table or {}).preset)
+    return config
+end
+
+---@private
+---@param name? render.md.config.Preset
+---@return render.md.UserConfig
+function M.config_preset(name)
     if name == 'obsidian' then
         ---@type render.md.UserConfig
         return {
@@ -30,4 +38,24 @@ function M.get(user_config)
     end
 end
 
+---@private
+---@param name? render.md.table.Preset
+---@return render.md.UserPipeTable
+function M.pipe_table_preset(name)
+    if name == 'round' then
+        ---@type render.md.UserPipeTable
+        return {
+            -- stylua: ignore
+            border = {
+                '╭', '┬', '╮',
+                '├', '┼', '┤',
+                '╰', '┴', '╯',
+                '│', '─',
+            },
+        }
+    else
+        return {}
+    end
+end
+
 return M

Diff for: lua/render-markdown/state.lua

@@ -300,6 +300,7 @@ function M.validate()
         if pipe_table ~= nil then
             append_errors(path .. '.pipe_table', pipe_table, {
                 enabled = { pipe_table.enabled, 'boolean', nilable },
+                preset = one_of(pipe_table.preset, { 'none', 'round' }, {}, nilable),
                 style = one_of(pipe_table.style, { 'full', 'normal', 'none' }, {}, nilable),
                 cell = one_of(pipe_table.cell, { 'padded', 'raw', 'overlay' }, {}, nilable),
                 border = string_array(pipe_table.border, nilable),

Diff for: lua/render-markdown/types.lua

@@ -29,6 +29,7 @@
 
 ---@class (exact) render.md.PipeTable
 ---@field public enabled boolean
+---@field public preset render.md.table.Preset
 ---@field public style render.md.table.Style
 ---@field public cell render.md.table.Cell
 ---@field public border string[]