[FG5] Migrate wiki to docs

[ChampionAsh5357]

Migrates the FG5 wiki to the Forge docs. Once again, this is a draft as I will only be able to work on it at certain times.

Closes #487

Pages:

• [x] index.md
• [x] contributing.md
• [x] gettingstarted/index.md
• [x] configuration/index.md
• [x] configuration/runs.md
• [x] dependencies/index.md
• [x] dependencies/jarinjar.md

[ChampionAsh5357]

Ok, this is ready for review now.