build: improve changelog parsing and order

[Mishura4]

• Added the ability for the parser to parse more patterns :
  • A commit with several categories, e.g. foo, bar: many foos, many bars. Only the first category is taken into account, but all of them are split and parsed with a regex, so they can easily be used if needed. ❗ Commits marked as breaking will always be listed at the top the changelog in the breaking section (alongside their own category if the breaking was a secondary category)
  • A commit with a scope, e.g. feat(scope): some changes, all commits with the same scope will be grouped together in the changelog, listed as Scope: some changes
• Fixed the order of the categories, which are now listed in declaration order, as opposed to in the order of the first commit that references them
• The script will warn if a commit has failed to parse a category, and now add them to misc. Warnings are generated on stderr and can be silenced using shell redirection

All other behavior was left intact.

Changelog after this commit:

The changelog is listed below:

Release Changelog
===========

## ✨ New Features
- Add SPDX-License-Identifier to headers in files
- Introduce the media channel type (#746)
- Adding AVX implementation for mixing audio. (#745)
- Add STDCORO to cspell
- Add `dpp::snowflake::str()` that returns string form of snowflake value
- Added functionality for guild onboarding and welcome screen (#734)

## 🐞 Bug Fixes
- Fix dodgy search and replace, vscode inserting newlines
- Fix spelling error
- `default` empty destructors
- Delete copy and move assignment operators for cluster
- Workaround gcc-12 bug #105329 (#748)
- Coroutines: better support for clang, remove experimental if unneeded, add missing headers (#743)
- Warning for [=] copy without explkit , rerun coro builder for onboarding
- Add /bigobj to non-VCPKG MSVC CMake flags, fixing ninja build, and fix `CMakeSettings.json` (#740)

## ♻️ Refactoring
- Change `interaction_response.msg` from message* to message, fixing double free on copy (#762)
- Json parsing helper functions added to unify the way arrays are parsed (#744)
- Use nullptr instead of NULL
- Use structured bindings
- Change `std::for_each` to ranged for loops

## 📚 Documentation
- Add openssf scorecard to readme
- Add spelling
- Fix typo (#741)
- Some tweaks in code examples (#742)
- Documentation for `unicode_emoji` namespace (#739)

## 📜 Miscellaneous Changes
- Create `pull_request_template.md`
- Update `scorecard.yml`
- Update `dependabot.yml`
- OpenSSF best practices badge (#766)
- Update `README.md`
- D++ == CHAD++ // true (#747)
- Clang-tidy namespace comment autofix
- Update `codeql.yml`
- Update `SECURITY.md`
- Create `scorecard.yml`
- Enable CORO on g++11, g++12, osx
- Dont enable AVX when compiling on GHA
- Update `CONTRIBUTING.md`
- Update `CONTRIBUTING.md` - add rules about not just using automated tools to generate bad prs

## 👷 Build/CI
- Improve changelog parsing and order
- Add signing shell script to auto sign releases with gpg and upload .asc alongside artifacts
- Apply security best practices (#749)


**Thank you for using D++!**

STDERR output :

PHP Warning:  could not guess category for commit "Create `pull_request_template.md`", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234
PHP Warning:  could not guess category for commit "OpenSSF best practices badge (#766)", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234
PHP Warning:  could not guess category for commit "D++ == CHAD++ // true (#747)", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234
PHP Warning:  could not guess category for commit "Create `scorecard.yml`", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234
PHP Warning:  could not guess category for commit "enable CORO on g++11, g++12, osx", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234
PHP Warning:  could not guess category for commit "dont enable AVX when compiling on GHA", adding it to misc in /home/miuna/dev/DPP/buildtools/changelog.php on line 234

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