[feature-proposal] streamline module-structure

[orgua]

while modernizing the codebase I had some thoughts on the check-structure I'd like to implement:

1. get rid of the misc-category and move these checks into root-level to keep it flatter, example: misc.numbers.check_xyz would become numbers.check_xyz
2. every FN in check-script-file should be interpreted as a check, so checks can be adressed by numbers.xyz and not numbers.check_xyz. this makes the structure cleaner and individual selection can be granular on check-level
3. in addition to 2): generalize check-name with an exception, if there is a disabled_, beta_ or better preview_ in front (or appendix) of it to mark faulty- or beta-checks (just use one of them and allow enabling that preview-class via cli-argument)
4. num 2) & 3) would also allow to remove boilerplate err = "name" and autogenate it
5. maybe add a shortname instead, like PNS001 to allow disabling it in config
6. establish a rule-system for when to use files and directories, ie. oxymorons-dir has only one file with one check in it and should be a file. directories should only be used when there are real subcategories, which is a distinction to sub-checks in a file.
7. divide checks into static ones that can have precompiled regex (faster startup) and dynamic ones (url-checker, ...) that can't be pre-compiled

update: for making it future-safe:

8. add language-metadata to allow other checks for specific languages or even general ones
9. add keywords-metadata for selecting groups of checks like general, prose, nsfw, scientific,