updated welcome screen

updated env file import

Merge pull request #3 from soubhagya2001/ToolCalling_13July

Updated help section, readme

added models list feature

corrected cd command

Modified text

Added tool calling functionality

Merge pull request #2 from soubhagya2001/AIChat_7July

ctrl+v support

Added cmd,powershell command support

Added Gemini Chat, help function

Merge pull request #1 from soubhagya2001/WelcomeScreen_29June

Added welcome screen

Updated README file