Add "Tweet Now", Toggle for tweet image capabilities and improvements in tweet status.

[Sidsector9]

Description of the Change

This PR following functionalities.

1. Tweet Now Functionality

Tweet now functionality allows users to tweet any time from the post editor (Gutenberg and classic editor).

Gutenberg Editor	Classic Editor

2. Add functionality for add/remove featured image from tweet

Now user can decide at post level if they want to send featured image in tweet or not.

Gutenberg Editor	Classic Editor

3. Tweet status improvements

Tweet status now shows multiple logs and the status of each tweet.

Gutenberg Editor	Classic Editor

Closes #179
Closes #180
Closes #181

How to test the Change

1. Configure the plugin.
2. Test each functionality listed above thoroughly.

Changelog Entry

Added - "Tweet now" functionality.
Added - Feature toggle for adding/removing featured image from the tweet.
Changed - Improvements in Tweet status.

Credits

Props @iamdharmesh, @Sidsector9, @jeffpaul, (@linawiezkowiak and @oszkarnagy for the UX/Design work.)

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.

[iamdharmesh]

@Sidsector9 I have completed the work here. can you please review it once before we request review from the team.

Thanks.

[Sidsector9]

@iamdharmesh thanks for porting the feature to the Classic editor as well. I tested this with:

• Posts that were and were not tweeted through Classic & Gutenberg Editors using develop.
• Posts that were and were not tweeted through Classic & Gutenberg Editors using feature branch.
• New posts (tweet) using the feature branch.

Works well 👍

[jeffpaul]

@Sidsector9 @iamdharmesh sounds like this is good to merge now, correct?

[cadic]

LGTM with the small fix in CSS

[cadic]

E2E tests are broken, reported in #211