Need help section in app for new users

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Fixes #39

Description

For navigation, modify top app bar menu and added help menu item.
Created a HelpView class for the help screen UI and uses a HelpViewModel for the help data population.
Created a HelpContentRepository class for resolving the help content.
Added a help.json with dummy content that will be updated in a separate ticket.
Added help json parser for transforming the json data into the HelpContent.
Added some extensions/methods in utils.

Alternative(s) considered No

Type Feature

Screenshots (if applicable) Screenshot_2023-01-17-00-15-03-64_52429609bbe183aad5963865f85fb3b1 Screenshot_2023-01-17-00-14-43-23_52429609bbe183aad5963865f85fb3b1

Checklist

[x] I have read the Contributing page.
[x] I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
[x] I have written Unit tests for any new feature(s) and edge cases for bug fixes.
[x] I have added any strings visible on UI components to the strings.xml file.
[x] I have updated the CHANGELOG.md file for any notable changes to the codebase.
[x] I have built and run the debug app to verify my change fixes the issue and/or does not break the demo app(s).

sufiishq / sufiishq-mobile

Need help section in app for new users #43