Add user-proxy messages

[davorrunje]

Description

Fixes # (issue number)

Type of change

Please delete options that are not relevant.

• Documentation (typos, code examples, or any documentation updates)
• Bug fix (a non-breaking change that resolves an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a fix or feature that would disrupt existing functionality)
• This change requires a documentation update

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 27.27273% with 16 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
examples/cli/main_user_proxy.py	0.00%	13 Missing ⚠️
fastagency/core/io/console/base.py	33.33%	2 Missing ⚠️
fastagency/core/io/mesop/main.py	0.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
fastagency/core/runtimes/autogen/base.py	70.11% <100.00%> (-1.32%)	⬇️
fastagency/logging.py	100.00% <100.00%> (ø)
fastagency/core/io/mesop/main.py	0.00% <0.00%> (ø)
fastagency/core/io/console/base.py	83.33% <33.33%> (-2.64%)	⬇️
examples/cli/main_user_proxy.py	0.00% <0.00%> (ø)

... and 3 files with indirect coverage changes