1st Portuguese translation attempt

:portugal: translations!

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[IMPROVEMENT] Save the scroll Position of chatRoomsFragment

[REFACTOR] refactor app module

remove unwanted imports
handle arguments using elvis operator in activities and fragments
get rid of redundant return keyword in a single block method
handle deprecated function calls
handle non null assertion operator with elvis operator

[FIX][CI] Revert "[REFACTOR] Coroutines yield"

[REFACTOR] Coroutines yield

merge

[IMPROVEMENT] Changing search field width should be the max width

[NEW] Group chats by favorites

[IMPROVEMENT] Delete account dialog UI

[FIX] Saving unsend message

[NEW] Add erase feature in drawing

[FIX] Mistakes on the README.md.

[FIX] Fixes app crashes when channel Details button is clicked while scrolling

[FIX] Added default background image for avatar image view

[FIX] Chatroom showing empty messages in RTL layout

[FIX] About fragment app bar title is change from "About" to "Rocket.Chat" on rotate.