Added new Brigadier commands related APIs for bungee/paper/cli + a few javadoc

pom.xml

@@ -62,6 +62,7 @@
 	
     <modules>
         <module>pandalib-bungee</module>
+        <module>pandalib-bungee-commands</module>
         <module>pandalib-bungee-permissions</module>
         <module>pandalib-bungee-players</module>
         <module>pandalib-chat</module>
@@ -72,6 +73,7 @@
         <module>pandalib-net</module>
         <module>pandalib-netapi</module>
         <module>pandalib-paper</module>
+        <module>pandalib-paper-commands</module>
         <module>pandalib-paper-permissions</module>
         <module>pandalib-paper-players</module>
         <module>pandalib-paper-reflect</module>