feat(compiler): make interpolation symbols configurable (@Component config) (#9367)

closes #9158

modules/@angular/facade/src/lang.dart

@@ -367,3 +367,7 @@ bool hasConstructor(Object value, Type type) {
 String escape(String s) {
   return Uri.encodeComponent(s);
 }
+
+String escapeRegExp(String s) {
+  return s.replaceAllMapped(new RegExp(r'([.*+?^=!:${}()|[\]\/\\])'), (Match m) => '\\${m[1]}');
+}

modules/@angular/facade/src/lang.ts

@@ -466,3 +466,7 @@ export function hasConstructor(value: Object, type: Type): boolean {
 export function escape(s: string): string {
   return _global.encodeURI(s);
 }
+
+export function escapeRegExp(s: string): string {
+  return s.replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
+}