**As** a developer integrating op-blocknote-extensions into an external application
**I want** to configure a separate "real OpenProject URL" (distinct from the proxy/API base URL) 

**So that** generated work package links point directly to OpenProject instead of going through the proxy

**Acceptance criteria**

* op-blocknote-extensions allows specifying a optional Begin of the insertionproxyUrlEnd of the insertion Begin of the deletion proxy\_urlEnd of the deletion on initialization (alongside the existing Begin of the insertionbaseUrl)End of the insertion Begin of the deletion base\_url)End of the deletion

* if the Begin of the insertionproxyUrlEnd of the insertion Begin of the deletion proxy urlEnd of the deletion is not given, it is set to the value of the Begin of the insertionbaseUrlEnd of the insertion Begin of the deletion base\_urlEnd of the deletion

* all API requests that need authorization use the Begin of the insertionproxyUrl (therefore, only the paste-detection and the direct links use the baseUrl any more)End of the insertion Begin of the deletion proxy\_urlEnd of the deletion