LibJS: Consolidate error messages into ErrorTypes.h

Now, exceptions can be thrown with
interpreter.throw_exception<T>(ErrorType:TYPE, "format", "args",
"here").

Libraries/LibJS/Tests/bigint-basic.js

@@ -11,7 +11,7 @@ try {
         +bigint;
     }, {
         error: TypeError,
-        message: "Can't convert BigInt to number"
+        message: "Cannot convert BigInt to number"
     });
 
     assert(12n + 34n === 46n);