feat(types): create peertube-types package

Create dedicated Typescript "types" configuration file for each "projects".
Create a types folder which includes every useful ts definition:
- client
- server
- shared
Add tooling to create a proper package, extract dependencies, etc...
Add CI Github task.

refactor(types): publish types package in release script

scripts/release.sh

@@ -118,3 +118,8 @@ rm -f "./client/dist/embed-stats.json"
       git checkout "$branch"
   fi
 )
+
+# Release types package
+npm run generate-types-package
+cd types
+npm publish --access public