Add gradle lockfile

[larkox]

Summary

Add gradle lockfile.

There are two ways to write the lock file:

• Passing an argument to the android build (npm run android -- --extra-params --write-locks)
• Running the dependencies task on gradle with write locks (android/gradlew app:dependencies --write-locks)

To update all current locks we can run the depdencies task with update locks:
android/gradlew app:dependencies --update-locks "*:*"

Ticket Link

Fix https://mattermost.atlassian.net/browse/MM-57196

Release Note

NONE

[enahum]

Lgtm but please document how to update it when adding/updating dependencies both direct and those included in RN libraries

[larkox]

@enahum Where do you think is the best place to document this?

[enahum]

@enahum Where do you think is the best place to document this?

@larkox Maybe the dev docs? And perhaps also in the description of the PR?

[esarafianou]

@jupenur can you review the PR for Security?