feat: #874 - prefix and simplified initialization

[mauroerta]

Proposed changes

Re-introduction of prefix to prefix classes and variables. Unfortunately, it's not possible for now to re-introduce minify and emoji because, since the process that extracts the classes is detached from the app itself, the order of extraction is different which means that the classes generated ar runtime will not match from the ones generated at build-time.

This is me when I realized I could not put the emojis anymore:

Types of changes

• [x] ✨ New feature (non-breaking change which adds functionality or enhancements)

Checklist

• [x] 👀 I have read the CONTRIBUTING doc
• [x] ✅ Lint and unit tests pass locally with my changes
• [x] 🧪 I have added tests that prove my fix is effective or that my feature works
• [x] 📚 I have added the necessary documentation (if appropriate)
• [x] 🔀 Any dependent changes have been merged and published in downstream modules

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 4b91466a0e6045a4ebbb156f87fce99847042ac5

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[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (b094895) 100.00% compared to head (4b91466) 96.80%. Report is 140 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #875 +/- ## =========================================== - Coverage 100.00% 96.80% -3.20% =========================================== Files 103 68 -35 Lines 914 814 -100 Branches 160 146 -14 =========================================== - Hits 914 788 -126 - Misses 0 16 +16 - Partials 0 10 +10 ``` [see 135 files with indirect coverage changes](https://app.codecov.io/gh/morfeojs/morfeo/pull/875/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=morfeojs)

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