Dev

[sollarp]

I added the following improvement to the project. UI:

• UI improvement on chat text length to fit.
• Added Bin icon and make it clickable to remove conversation. Code:
• Deleting function to chat conversation which removes conversation items and message items from firebase.
• Using the benefit of Flow deleted item removes itself from UI.

Pre-launch Checklist

• [x ] I read the rules PR (title, labels, commit messages...).
• [x ] I definitely don't PR files with pointless edits.
• [x ] I added screenshots if change UI/UX (has modified code in lib/src/ui/*).
• [- ] I writen all test cases coverage and all passed.
• [x ] All existing and new tests are passing.

Testcases covered (check if passed)

• [- ] Case 1
• [- ] Case 2
• [- ] Case 3

Screenshots (if change UI/UX)