add types to exports in package.json files

[OliverDudgeon]

How did you fix the issue?

I've added the missing types fields to the exports in package.json. When using "moduleResolution": "bundler" typescript, currently raises issues like (#5760):

Could not find a declaration file for module 'ketcher-standalone'. '/Users/oliver/codetemp/im/squonk-frontend/apps/data-manager-ui/node_modules/.pnpm/ketcher-standalone@3.1.0_react-dom@19.1.0_react@19.1.0__react@19.1.0/node_modules/ketcher-standalone/dist/main.js' implicitly has an 'any' type.
  There are types at '/Users/oliver/codetemp/im/squonk-frontend/apps/data-manager-ui/node_modules/ketcher-standalone/dist/index.d.ts', but this result could not be resolved when respecting package.json "exports". The 'ketcher-standalone' library may need to update its package.json or typings.ts(7016)

Now when Typescript uses the exports field, it is able to find the types correctly.