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>

android/app/build.gradle

@@ -68,12 +68,24 @@ android {
 
     buildTypes {
 		release {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
 			signingConfig signingConfigs.release
 		}
-		debug{
-			applicationIdSuffix = ".debug"
-		}
     }	
+
+    flavorDimensions "default"
+    productFlavors {        
+        development {
+            dimension "default"
+            applicationIdSuffix ".dev"
+        }
+        production {
+            dimension "default"
+            applicationIdSuffix ""
+        }
+    }
 }
 
 flutter {

android/app/src/development/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
+</adaptive-icon>

android/app/src/development/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="ic_launcher_background">#FF21013A</color>
+</resources>

android/app/src/production/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
+</adaptive-icon>

android/app/src/production/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="ic_launcher_background">#FF3A2101</color>
+</resources>

android/build.gradle

@@ -7,6 +7,10 @@ allprojects {
 
 rootProject.buildDir = '../build'
 
+buildscript {
+    ext.kotlin_version = '1.8.0'
+}
+
 //[Fixes AAPT: error: resource android:attr/lStar not found]
 subprojects {
     afterEvaluate { project ->