Adds language model tool that creates new spfx projects. Closes #707, #705 - #852

Adds language model tool that creates new spfx projects. Closes #707, #705#852

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pnp:devpnp/vscode-viva:devfrom

Adam-it:refactors-new-chat-command-to-lm-toolAdam-it/vscode-viva:refactors-new-chat-command-to-lm-toolCopy head branch name to clipboard