feat: Group messages in the chat by user and timestamp

[przemvs]

Description

Group messages in the chat by user and timestamp. Previous we displaying message in row, now we grouping messages by timestamp.

Examples

3 messages sent by John Smith shortly after each other, at 10:32 a.m. are grouped by the same message header and the timestamp “10:32 a.m.”

A 4th message sent by John Smith at 10:33 a.m. is displayed by another message header with the timestamp “10:33 a.m.”

Screenshots/Screencast (for UI changes)

Previous:

Now:

Additional information:

This case is hard to debug in browser, so will be fixed ASAP after merge this task.

Checklist

• PR has been self reviewed by the author;
• Hard-to-understand areas of the code have been commented;
• If it is a core feature, unit tests have been added;

Important details for the reviewers

(Delete this section if unnecessary)

• use (x) data
• can be reviewed commit-by-commit
• be sure to look at ...

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (3e5cc60) 45.42% compared to head (0461f70) 45.41%.

❗ Current head 0461f70 differs from pull request most recent head 7c4a961. Consider uploading reports for the commit 7c4a961 to get more accurate results

Additional details and impacted files

@@                           Coverage Diff                           @@
##           feat/WPB-5852-message-content-width   #16496      +/-   ##
=======================================================================
- Coverage                                45.42%   45.41%   -0.01%     
=======================================================================
  Files                                      740      742       +2     
  Lines                                    24240    24272      +32     
  Branches                                  5506     5524      +18     
=======================================================================
+ Hits                                     11010    11024      +14     
- Misses                                   11822    11835      +13     
- Partials                                  1408     1413       +5     

[przemvs]

This should be merged after code freeze.