Moving go code to subdir.

code/.gitignore

@@ -0,0 +1,16 @@
+# Allowlisting gitignore template for GO projects prevents us
+# from adding various unwanted local files, such as generated
+# files, developer configurations or IDE-specific files etc.
+#
+# Recommended: Go.AllowList.gitignore
+
+# Ignore everything
+*
+
+.env
+# But not these files...
+!/.gitignore
+
+!*.go
+!go.sum
+!go.mod