Added systemPrompt and chatWithImage for gemini

[sujal011]

• Added Support for systemPrompt optionally for openAi and gemini model
• Added Support for chatWithImage for gemini model
• Added Tavily as a tool to use with agents more easily

[github-actions[bot]]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[sandys]

hi @sujal011 thanks for the PR. can you please paste the CLA line above. so we can start the review process ?

[sujal011]

recheck

[sujal011]

I have read the Arakoo CLA Document and I hereby sign the CLA

[sujal011]

recheck

[sandys]

@sujal011 there is a build failure

you can check this here https://github.com/arakoodev/EdgeChains/actions/runs/12442969798/job/34741652750?pr=417

if you want to join the discord, we can discuss about this and other stuff

[sujal011]

Yes I would like to join and discuss.

[sandys]

@sujal011 the discord join link is in the github readme.

[sujal011]

Added Tavily Search api under the tools section