Templates for static fileserver and redirect

[itowlson]

This depends on #889 (and currently includes it; I'll rebase once we've agreed whether that's the way to go and have merged whatever comes out of the discussion).

At the moment the component references refer to test releases in my forks. I will update these when we do formal releases.

ivan@hecate:~/testing/compytest$ spin add static-fileserver statto
HTTP path: /assets
Directory containing static assets to serve: assets

ivan@hecate:~/testing/compytest$ spin add redirect au-revoir
Redirect from: /au-revoir
Redirect to: /goodbye

ivan@hecate:~/testing/compytest$ spin up
Serving http://127.0.0.1:3000
Available Routes:
  hello: http://127.0.0.1:3000/hello
  goodbye: http://127.0.0.1:3000/goodbye
  statto: http://127.0.0.1:3000/assets (wildcard)
  au-revoir: http://127.0.0.1:3000/au-revoir

[itowlson]

spin templates list output after installing these:

+----------------------------------------------------------------------------+
| Name                    Description                                        |
+============================================================================+
| bartholomew             Web site using Bartholomew micro-CMS               |
| http-c                  HTTP request handler using C and the Zig toolchain |
| http-empty              HTTP application with no components                |
| http-go                 HTTP request handler using (Tiny)Go                |
| http-grain              HTTP request handler using Grain                   |
| http-rust               HTTP request handler using Rust                    |
| http-swift              HTTP request handler using SwiftWasm               |
| http-zig                HTTP request handler using Zig                     |
| redirect                Redirects a HTTP route                             |
| redis-go                Redis message handler using (Tiny)Go               |
| redis-rust              Redis message handler using Rust                   |
| static-fileserver       Serves static files from an asset directory        |
| testing-custom-filter                                                      |
+----------------------------------------------------------------------------+

Wondering if static-fileserver should be static-file-server or just fileserver? #BikeshedTime

[mikkelhegn]

Have only review the template metadata.

[mikkelhegn]

I propose to change this to "files-path" with a prompt "Directory containing the files to serve."

[itowlson]

Done - thanks!