Paintroid 611 - Add main options to landing page

[Rd4dev]

PAINTROID-611: Add main options to landing page

Relocated main options from the MainActivity to LandingPageActivity

Main Options:

• Rate Us!
• Help
• About
• Feedback

For testability purposes the application ID is set to "org.catrobat.paintroid"

checklist for this pull request

Please review the contributing guidelines and wiki pages of this repository.

• Include the name of the Jira ticket in the PR’s title
• Include a summary of the changes plus the relevant context
• Choose the proper base branch (develop)
• Confirm that the changes follow the project’s coding guidelines
• Verify that the changes generate no compiler or linter warnings
• Perform a self-review of the changes
• Verify to commit no other files than the intentionally changed ones
• Include reasonable and readable tests verifying the added or changed behavior
• Confirm that new and existing unit tests pass locally
• Check that the commits’ message style matches the project’s guideline
• Stick to the project’s gitflow workflow
• Verify that your changes do not have any conflicts with the base branch
• After the PR, verify that all CI checks have passed
• Post a message in the #paintroid Slack channel and ask for a code reviewer

[khalid-nasralla]

Looks good to me.

[foenabua]

LGTM!

[aman021202]

Kindly assign me this issue .