feat: changelogs within npmx

[WilcoSp]

This pr will add the possibility to view the changelog.md & releases from a package's github (maybe others) repo within npmx.
This will make it easier to see the changelogs while not needed to leave npmx and allowing quicker access.

This pr is the first pr of #501

---

Currently this pr is in draft mode to allow for previewing while I still work on this pr.

If you've feedback about this pr leave a comment behind.
if you wish something to be added, please check & comment at #501

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Feb 16, 2026 4:59pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored	Preview	Feb 16, 2026 4:59pm
npmx-lunaria	Ignored		Feb 16, 2026 4:59pm

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Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[codecov]

Codecov Report

❌ Patch coverage is 47.05882% with 9 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
app/composables/usePackageChangelog.ts	0.00%	5 Missing and 1 partial ⚠️
app/pages/package/[[org]]/[name].vue	0.00%	3 Missing ⚠️

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