Initial Integrations plugin scaffolding: types, registry, logo API (#90)
* Integrations plugin: types, registry, logo API, and @roostorg/types from npm
Add types and server-side plugin loading (config, registry, logo routes).
Switch client and server to published @roostorg/types.
* add whiteline
* code review changes
* Integration Plugin Backend: migration, GraphQL API, and plugin signals (#91)
* Integration Plugin Backend: migration, GraphQL API, and plugin signals
* code review changes
* Integration plugin: client UI, example config, and example dependency (#92)
* Integration plugin: client UI, example config, and example dependency
* code review changes
* fix casting error
* betterer fixes