feat: Combine injection plugins

[timfish]

While benchmarking large projects with Rolldown, I found that MagicString.generateMap() has a large overhead. There are ways to improve this more in the future, however this issue is exacerbated by the fact that we inject up to 3 separate times via 3 separate plugins. Each of these 3 injects into the top of the source and then has to rewrite the sourcemap!

This PR combines the 3 injection plugins into a single plugin which means the chunks only need the sourcemaps generation once.

This PR retains esbuild with 3 separate plugins because I haven't worked out how to migrate that yet.

With an example app of 10k modules and 10MB output file:

• Rolldown = 900ms
• Rolldown + Sentry Rollup plugin = 4.5s
• Rolldown + Sentry Rollup plugin + these changes = 1.8s

[github-actions]

Semver Impact of This PR

🟡 Minor (new features)

📋 Changelog Preview

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New Features ✨

• Combine injection plugins by timfish in #844

Bug Fixes 🐛

Plugin Manager

• Respect sourcemap.ignore values for injecting debugIDs by s1gr1d in #836
• Enable "rejectOnError" in debug by s1gr1d in #837

Other

• (vite) Skip HTML injection for MPA but keep it for SPA by s1gr1d in #843

Documentation 📚

• Add RELEASE.md to document release process by nicohrubec in #834

Build / dependencies / internal 🔧

• (release) Switch from action-prepare-release to Craft by BYK in #831
• Use pull_request_target for changelog preview by BYK in #842

Other

• test: Ensure Debug IDs match by timfish in #840

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