Add firebase authentication in Mesop

[harishmohanraj]

Description

Add firebase authentication in Mesop

Fixes #510

Type of change

• 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

• 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
• I have included code examples to illustrate the modifications

[codecov]

Codecov Report

Attention: Patch coverage is 64.21053% with 34 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
fastagency/ui/mesop/firebase_auth.py	51.28%	18 Missing and 1 partial ⚠️
fastagency/ui/mesop/main.py	47.05%	9 Missing ⚠️
...cs/docs_src/user_guide/ui/mesop/main_mesop_auth.py	66.66%	5 Missing ⚠️
fastagency/ui/mesop/firebase_auth_component.py	91.66%	1 Missing ⚠️

Files with missing lines	Coverage Δ
fastagency/ui/mesop/auth.py	100.00% <100.00%> (ø)
fastagency/ui/mesop/data_model.py	100.00% <100.00%> (ø)
fastagency/ui/mesop/mesop.py	56.57% <100.00%> (ø)
fastagency/ui/mesop/styles.py	100.00% <100.00%> (ø)
fastagency/ui/mesop/firebase_auth_component.py	91.66% <91.66%> (ø)
...cs/docs_src/user_guide/ui/mesop/main_mesop_auth.py	66.66% <66.66%> (ø)
fastagency/ui/mesop/main.py	24.13% <47.05%> (+2.65%)	⬆️
fastagency/ui/mesop/firebase_auth.py	51.28% <51.28%> (ø)

... and 2 files with indirect coverage changes