Challenges and Utilities + 1.8 and 1.9 Combat System support

# Challenges-and-Utilities
Spigot Plugin for Minecraft 1.16

Commands:

- /timer:
/timer resume (starts Timer), /timer pause (stopps Timer), /timer time <seconds> (sets Zeit), /timer reset (set Timer to 0)

- /position:
/position add <Name> (Adds a position), /position show <Name> (shows the Position), /position del <Name> (deletes the position) | alias: /pos

- /invsee <Player> (shows Player inventory)

- /backpack (shows private backpack) | alias: /bp

- /challenge

- /world:
/world new <Name> <Type> (generates new World), /world enter <Name> (enters World)
- /coins:
- /coins pay <to> <amount>
- /coins show (shows amount of coins)
- /coins set <amount> (sets to coins to the specified amount (OP only))
- /pvp [1.8/1.9] (sets the Combat version to 1.8 or 1.9)

Crafting Recipe:
- Saddle:

- L L L
- L S L
- / T /

L = Leather
S = String
T = Tripwirehook

Furnace Recipe:
- Rotten Flesh -> Leather

The Combat System is like the Combat System in 1.8!
If you have ANY suggestions, please DM me! I'll try to add it in the next update!

If something doesn't work, please don't downvote the plugin. Please create an issue on github or DM me. Thank you!

IMPORTANT: The /world new Command requires a lot of memory an could cause an time out or even crash the spigot server! I'm testing these out on a laptop (Intel Core I5-4300U (1.9GHZ), 8gb DDR3 Ram) and when I create a world other than FLAT or NORMAL, I time out. But no worry, your inventory etc. will be saved if you time out.