Create LICENSE

Update the license to AGPLv3

Need permission from the following contributors to continue:

- [ ] @andreluis034
- [ ] @mrjvs  
- [ ] @superwhiskers  
- [ ] @ThatNerdyPikachu  
- [ ] @SuperMarioDaBom  
- [ ] @lukeeey  
- [ ] @CaramelKat

Author: jonbarrow