refactor: Rename 'pkg/lib' to 'pkg/src'

Contemporaneous with similar renames of my Bash repositories

Author: hyperupcall

basalt.toml

@@ -7,7 +7,7 @@ description = 'A cute little Bash library for blazing fast argument parsing'
 
 [run]
 dependencies = ['https://github.com/hyperupcall/[email protected]']
-sourceDirs = ['pkg/lib', 'pkg/lib/public']
+sourceDirs = ['pkg/src', 'pkg/src/public']
 builtinDirs = []
 binDirs = []
 completionDirs = []