[1.19.x] Rewrite Getting Started

[ChampionAsh5357]

Rewrites the getting started section to be more friendly to new modders or those who do not have the relevant experience in minecraft modding. Adds explicit mentions against those who do not know the languages or tools they need to use.

Making this a draft since maty told me to work on FG5 first, so...yeah. Here's just keeping things open on how far I've gotten.

Part of #486

Supersedes #484

• [x] index.md
• [x] contributing.md
• gettingstarted
  • [x] index.md
  • [x] structuring.md
  • [x] versioning.md

[ChampionAsh5357]

Ok, this should be ready for review. I've restructured it to be more like the wiki without any of the extra redundancies.

[Icicles0]

I think this should just get merged already

[ChampionAsh5357]

I think this should just get merged already

It only makes sense to merge something once we consider it to be accurate. Especially since we are rewriting this to be more explanatory and user friendly to new modders.