Android - Added separation for development/production builds (#43)

## Pull Request Description

Added a development build to so it's easier to develop alongside the
current release (Android only atm)

## Issue Being Fixed

Developing removing the actually installed fladder app

Issue Number: N/A

## Checklist

- [ ] If a new package was added, did you ensure it works for all
supported platforms? Is the package also well maintained?
- [ ] Did you add localization for any text? If yes, did you sort the
.arb file using ```arb_utils sort <INPUT_FILE>```?
- [ ] Check that any changes are related to the issue at hand.

Co-authored-by: PartyDonut <PartyDonut@users.noreply.github.com>

lib/util/custom_color_themes.dart

@@ -1,9 +1,10 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 enum ColorThemes {
   fladder(
     name: 'Fladder',
-    color: Colors.orange,
+    color: kDebugMode ? Colors.purpleAccent : Colors.orange,
   ),
   deepOrange(
     name: 'Deep Orange',