188 - add config for disabling features at UI level

[ri-pandey]

Description

Introduced config for disabling features at UI level. Enabled features are stored in ./ui/.env, and read in ./ui/config.js, which is where components read it from.

Docs

Related Issue(s)

Closes #188

Changes Made

List the main changes made in this PR. Be as specific as possible.

• [x] Feature added
• [ ] Bug fixed
• [x] Code refactored
• [x] Documentation updated
• [ ] Other changes: [describe]

Checklist

Before submitting this PR, please make sure that:

• [x] Your code passes linting and coding style checks.
• [x] Documentation has been updated to reflect the changes.
• [x] You have reviewed your own code and resolved any merge conflicts.
• [x] You have requested a review from at least one team member.
• [x] Any relevant issue(s) have been linked to this PR.

[ri-pandey]

@deepakduggirala I have changed this so that feature flags are read from the config and will require redeployment.