Initial agentic-components package + storybook

[JasonVMo]

Platforms Impacted

• none, private only change that doesn't touch components

Description of changes

This is a staging change that has a few parts:

@fluentui-react-native/agentic-components package

• This package is private to start as names/structure are TBD
• Adds one rudimentary Button component done in the most basic way possible

@fluentui-react-native/agentic-components-storybook package

• This is a private sub-package, located in a sub-directory of the components package
• It's done as a sub-package (itself a workspace package) to ensure that the dependency requirements don't pollute the main package dependencies
• This stands up storybook react-native using lite UI mode for macos, though windows is planned.
• Stories are pulled from the component library

prebuild build step

This sets up a prebuild build step which a package can use for codegen of various types.

• It is guaranteed to run before build during the root build actions
• NOTE: Individual package build commands don't do this automatically
• It can generate files under src or lib right now (for purposes of caching)
• reworked some of the root scripts to make it work

knip configuration extensions

• Connected the ignoreDependencies setting to the furn config so untraceable dependencies can be ignored.
• Fixing the dependency issue in the storybook would create a dependency between the codegen of a file that is .gitignored and repo-linting, so better to use the escape hatch already provided by knip