Add Codeberg as a code platform option

[egrace479]

This PR introduces the option to use Codeberg repositories, instead of GitHub repos. Specifically, defining PLATFORM: codeberg uses the Codeberg API for all code platform-based calls so that the catalog is expected to be run from a Codeberg repo. I did include a note in the personalization documentation regarding the fetch release and tag export scripts, as well as the workflows (they would need some platform-specific edits).

I set platform configs at the top of the code fetch file which will facilitate the addition of GitLab as well (see table in #96). Additionally, I switched to using SVGs for the platform logos due to the complexity required for the Codeberg logo.

Only one code platform can be used at a time.

Tested on the Forgejo Codeberg Organization by replacing the following keys in public/config.yaml:

ORGANIZATION_NAME: forgejo
...
# Branding
CATALOG_TITLE: Fake Forgejo Catalog
...
# Codebase platform for API calls and link generation. Supported values: "github" or "codeberg", pending: "gitlab".
PLATFORM: codeberg
...
# Array of "owner/repo" strings to include in addition to non-forked org repos.
# Use this for forked repos within the org and repos outside the org entirely.
ADDITIONAL_REPOS: []

Note: the ADDITIONAL_REPOS key was set to an empty list, since it fetches listed repos based on PLATFORM API.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 14 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 14 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

src/validateConfig.js:42

• The platform validation comment says PLATFORM is parsed “without whitespace”, but the check does not trim. A config like PLATFORM: "codeberg " (common copy/paste issue) will be rejected even though the code uses toLowerCase() elsewhere. Trimming here makes validation match the comment and prevents surprising config errors.

    const supportedPlatforms = ['github', 'codeberg'];
    const platform = config.PLATFORM;
    if (!platform || typeof platform !== 'string') {
        errors.push('PLATFORM');
    } else if (!supportedPlatforms.includes(platform.toLowerCase())) {

[hlapp]

See two minor inline edit suggestions.