Merge branch 'master' into 'main'

.gitignore

.idea/.gitignore

.idea/codeStyles/Project.xml

.idea/codeStyles/codeStyleConfig.xml

.idea/compiler.xml

.idea/deploymentTargetDropDown.xml

.idea/gradle.xml

.idea/kotlinc.xml

.idea/migrations.xml

.idea/misc.xml

.idea/vcs.xml

app/.gitignore

app/build.gradle.kts

app/google-services.json

app/proguard-rules.pro

...com/example/mobilecomputingapp/ExampleInstrumentedTest.kt

app/src/main/AndroidManifest.xml

...main/java/com/example/mobilecomputingapp/LoginActivity.kt

.../main/java/com/example/mobilecomputingapp/MainActivity.kt

...ain/java/com/example/mobilecomputingapp/SignupActivity.kt