refactor: change repo layout

Assets/CodeGen/EnumsMigration/.gitignore

@@ -0,0 +1,43 @@
+# ===== Result =====
+dest/*
+!dest/*.gitkeep
+
+# ===== ANTLR Output =====
+*.interp
+*.tokens
+
+CKGeneralLexer*.java
+CKEnumsParser*.java
+CKDefinesParser*.java
+
+# ===== Eclipse Java =====
+# Eclipse projects
+.classpath
+.project
+.settings/
+.metadata
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*