feat: many2many relations check

common/isSlice.go

@@ -0,0 +1,11 @@
+package common
+
+import "go/ast"
+
+func IsSlice(expr ast.Expr) bool {
+	arrayType, ok := expr.(*ast.ArrayType)
+	if !ok {
+		return false
+	}
+	return arrayType.Len == nil
+}