Add option `path` to create package at specific location

[Parth971]

Ability to use cmd like below

Relative
fastappkit app new vany-ai-plugin-llm-runtime --as-package --path=.

or

Absolute
fastappkit app new vany-ai-plugin-llm-runtime --as-package --path=/home/user/myproject

And this will only create the inner structure directly at provided path instead of create additional folder