[UI + Dependencies] Applied new style + added firebase

Added the Firebase Dependency and login flow. Also applied some new
styling. The new color is more reddish.

app/build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'com.android.application'
+    id 'com.google.gms.google-services'
 }
 
 android {
@@ -32,7 +33,12 @@ dependencies {
 
     implementation 'androidx.appcompat:appcompat:1.7.0'
     implementation 'com.google.android.material:material:1.12.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.2.1'
+    //Firebase Dependencies
+    implementation platform('com.google.firebase:firebase-bom:33.10.0')
+    implementation 'com.google.firebase:firebase-analytics'
+    implementation 'com.firebaseui:firebase-ui-auth:7.2.0'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'