Add support for "custom.gradle" files in all subprojects

.gitignore

@@ -16,4 +16,8 @@ classes/
 .metadata
 .vscode
 .settings
-*.launch
+*.launch
+
+# For adding dependencies outside of the tracked files
+flatdir/
+custom.gradle

build.gradle

@@ -65,4 +65,9 @@ allprojects {
     java {
         withSourcesJar()
     }
+
+    def customGradle = project.file('custom.gradle');
+    if (customGradle.exists()) {
+        apply from: customGradle;
+    }
 }

gradle.properties

@@ -4,7 +4,7 @@ org.gradle.daemon=false
 minecraft_version=1.16.5
 
 archives_base_name=ferritecore
-mod_version=2.0.1
+mod_version=2.0.2
 maven_group=malte0811.ferritecore
 
 fabric_loader_version=0.11.1