Mesop UI improvements

[davorinrusevljan]

Description

• when opening past conversation scroll to the top of the conversation
• if necessary shorten the title of conversation in past conversations box
• stagger user input to the right, and AutoGen to the left in the conversation view
• complete input with enter

Fixes #187, #183, #182, #125

Type of change

• New feature (a non-breaking change that adds functionality)

Checklist

• My code adheres to the style guidelines of this project (scripts/lint.sh shows no errors)
• I have conducted a self-review of my own code
• I have made the necessary changes to the documentation
• My changes do not generate any new warnings
• I have added tests to validate the effectiveness of my fix or the functionality of my new feature
• Both new and existing unit tests pass successfully on my local environment by running scripts/test-cov.sh
• I have ensured that static analysis tests are passing by running scripts/static-anaylysis.sh
• I have included code examples to illustrate the modifications

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 56 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
fastagency/ui/mesop/components/inputs.py	0.00%	37 Missing ⚠️
fastagency/ui/mesop/main.py	0.00%	14 Missing ⚠️
fastagency/ui/mesop/message.py	0.00%	3 Missing ⚠️
fastagency/ui/mesop/data_model.py	0.00%	2 Missing ⚠️

Files with missing lines	Coverage Δ
fastagency/studio/models/llms/together.py	100.00% <ø> (ø)
fastagency/ui/mesop/data_model.py	0.00% <0.00%> (ø)
fastagency/ui/mesop/message.py	0.00% <0.00%> (ø)
fastagency/ui/mesop/main.py	0.00% <0.00%> (ø)
fastagency/ui/mesop/components/inputs.py	0.00% <0.00%> (ø)