applying minor build speed improvements

- disabling release build type
- only including xxhdpi resources

app/build.gradle

@@ -13,8 +13,18 @@ android {
         def versionJson = new groovy.json.JsonSlurper().parseText(rootProject.file('version.json').text)
         versionCode versionJson.code
         versionName versionJson.name
+
+        if (isDebugBuild) {
+            resConfigs "en", "xxhdpi"
+            variantFilter { variant ->
+                if (variant.buildType.name == "release") {
+                    setIgnore(true)
+                }
+            }
+        } else {
             resConfigs "en"
         }
+    }
 
     bundle {
         abi.enableSplit true

build.gradle

@@ -18,6 +18,8 @@ def launchTask = getGradle()
         .getTaskRequests()
         .toString()
         .toLowerCase()
+def isReleaseBuild = launchTask.contains("release")
+ext.isDebugBuild = !isReleaseBuild
 
 subprojects {
     tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
@@ -116,7 +118,6 @@ ext.applyAndroidLibraryModule = { project ->
 }
 
 ext.applyCrashlyticsIfRelease = { project ->
-    def isReleaseBuild = launchTask.contains("release")
     if (isReleaseBuild) {
         project.apply plugin: 'com.google.firebase.crashlytics'
         project.afterEvaluate {