feat(chat): Show estimated remaining time to run chat script

[skarllot]

Pull Request

The issue or feature being addressed

• Text completion takes a long time and user do not have time reference

Details on the issue fix or feature implementation

• Show estimated remaining time to run chat script
• Improve feedback to user when signing in

Confirm the following

• I started this PR by branching from the head of the default branch
• I have targeted the PR to merge into the default branch
• I have included unit tests for the issue/feature
• I have successfully run a local build

[codecov]

Codecov Report

Attention: Patch coverage is 86.20690% with 8 lines in your changes missing coverage. Please review.

Project coverage is 56.53%. Comparing base (8daa3d1) to head (e3bbde6).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...rc/FlowPair/Agent/Operations/Login/LoginUseCase.cs	0.00%	7 Missing ⚠️
...lowPair/Support/Console/LongRemainingTimeColumn.cs	97.67%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #33      +/-   ##
==========================================
+ Coverage   55.04%   56.53%   +1.48%     
==========================================
  Files          71       72       +1     
  Lines        1517     1562      +45     
  Branches      110      117       +7     
==========================================
+ Hits          835      883      +48     
+ Misses        666      662       -4     
- Partials       16       17       +1     

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