[Editor] Create :api module which provides a common classes for both :game module and user project's Java code developed with :editor

api/build.gradle

@@ -0,0 +1,14 @@
+plugins {
+    id 'java-library'
+}
+
+group 'com.bartlomiejpluta.base'
+version 'unspecified'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+
+}