Langchain tools integration and tests setup

[RezaRahemtola]

Support the usage of tools from Langchain, including the 100+ community tools https://python.langchain.com/docs/integrations/tools/ and the toolkits from various projects built on langchain.

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 57 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@79d1690). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
libertai_agents/libertai_agents/agents.py	0.00%	26 Missing ⚠️
...ibertai_agents/libertai_agents/interfaces/tools.py	67.39%	15 Missing ⚠️
libertai_agents/libertai_agents/models/base.py	0.00%	8 Missing ⚠️
libertai_agents/libertai_agents/models/models.py	0.00%	4 Missing ⚠️
libertai_agents/libertai_agents/models/hermes.py	0.00%	2 Missing ⚠️
libertai_agents/libertai_agents/models/mistral.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #12   +/-   ##
=======================================
  Coverage        ?   22.74%           
=======================================
  Files           ?       12           
  Lines           ?      277           
  Branches        ?        0           
=======================================
  Hits            ?       63           
  Misses          ?      214           
  Partials        ?        0           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.