🧹 Clean up the gradle build scripts a little

Changes:
- Move all dependency versions to a shared file
- Order the projects in settings.gradle

cloud-minecraft/cloud-brigadier/build.gradle

@@ -1,5 +1,5 @@
 dependencies {
     implementation project(':cloud-core')
     /* Needs to be provided by the platform */
-    compileOnly 'com.mojang:brigadier:1.0.17'
+    compileOnly "com.mojang:brigadier:${vers['brigadier']}"
 }