Added 1.19 mobs to config, and updated Spigot API to 1.19

+ Fixed a typo in spawn reasons ( #8)
+ Plugin is now a single JAR for all versions

fix entity names using spaces instead of underscores in the config

+ Increased version
+ Updated the README
+ Fixed a bug where entities were being removed all the time
+ Updated the list of Spawn Reasons
+ Updated the list of Mob Groups
+ Updated the list of Mobs
+ Jars are now based on Java version instead of Minecraft version

For 1.17+, use the JDK16 JAR
For Pre 1.17 servers, use the JDK8 JAR