Added Lab 4 - Permssions

Labs/Lab4_Permissions/Lab-Permissions.pdf

Labs/Lab4_Permissions/Lab4Activity_Permissions.mp4

Labs/Lab4_Permissions/app/.gitignore

Labs/Lab4_Permissions/app/build.gradle

Labs/Lab4_Permissions/app/proguard-rules.pro

Labs/Lab4_Permissions/app/src/main/AndroidManifest.xml

...missions/app/src/main/java/course/labs/common/Snackbar.kt

.../src/main/java/course/labs/permissionslab/MainActivity.kt

.../app/src/main/res/drawable-v24/ic_launcher_foreground.xml

...ions/app/src/main/res/drawable/ic_launcher_background.xml

...ab4_Permissions/app/src/main/res/layout/activity_main.xml

...ssions/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

.../app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

...Permissions/app/src/main/res/mipmap-hdpi/ic_launcher.webp

...sions/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp

...Permissions/app/src/main/res/mipmap-mdpi/ic_launcher.webp

...sions/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp

...ermissions/app/src/main/res/mipmap-xhdpi/ic_launcher.webp

...ions/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp

...rmissions/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp