separate design system for kit

[SamueleA]

As per discussion with Corban, we need a different set of css variables name mapping and publish the design system to its own package.

1. this pr will create a custom mapping based on an environment variable

2. scripts were added to facilitate publishing the package to both the real design-system and to kit automatically.
   a. run pnpm release
   b. the name of the package will be set to @0xsequence/design-system, packages will be installed, and package will be built and published
   c. after, the name of the packge is set to @0xsequence/design-system-kit, packages will be reinstalled (because the name changed), package is built and published

[SamueleA]

will work on other solution for custom theming