Java: Add initial version of string replaceAll with no regex query

java/ql/src/Performance/StringReplaceAllWithNonRegex.ql

@@ -0,0 +1,20 @@
+/**
+ * @id java/string-replace-all-with-non-regex
+ * @name J-STR-001: Use of `String#replaceAll` with a first argument of a non regular expression
+ * @description Using `String#replaceAll` is less performant than `String#replace` when the first
+ *              argument is not a regular expression.
+ * @kind problem
+ * @precision very-high
+ * @problem.severity recommendation
+ * @tags performance
+ */
+
+import java
+
+from MethodCall replaceAllCall
+where
+  replaceAllCall.getMethod().hasQualifiedName("java.lang", "String", "replaceAll") and
+  //only contains characters that could be a simple string
+  replaceAllCall.getArgument(0).(StringLiteral).getValue().regexpMatch("^[a-zA-Z0-9]+$")
+select replaceAllCall,
+  "Call to 'replaceAll' uses an argument comprised of plain string characters only."