Test resources bandwidth with onbasca and distribute apks with gettor

* Test resource bandwidth with onbasca
* Add authentication to resource registration
* gettor: Distribute android apks
* moat: use pt_config.json to fetch builtin bridges from Tor Browser
* telegram: Fix segfault on handler configuration
* whatsapp: A dummy implementation

telegram and gettor bugfixes

* Mark backend full updates to distributors
* Propagate prunned resources to distributors
* Use https for backend connections
* Unauthenticated SMTP support
* telegram: improve usability
* telegram: upgrade the telegram library version
* gettor: support multilocale Tor Browser
* gettor: several bug fixes (github versions, short subject, imap
  iddle errors)
* moat: refresh builtin bridges periodically
* moat: support multiple shim tokens

Gettor feature complete

* Add a gitlab gettor updater
* Add prometheus metrics to gettor distributor
* Fix multiple gettor issues
* Distribute only bridgestrap tested and functional resources
* Ignore bridge authority updates without running bridges
* Include the location of the request to the Circumvention Settings API
* Add support to bridgelines in Circumvention map
* Circumvention Settings distributes dummy bridges if not valid
  shim-token provided
* Add an API to update Telegram dynamic bridges
* UX improvements in Telegram distributor

Telegram improvements for deployment

* Use both dynamic and bridge authority bridges for old telegram
  accounts
* Add tests to telegram distributor

Circumvention Settings API and Telegram distributors

* Add Circumvention settings API
* Add Telegram distributor
* Fix the use of the distibution request for bridges

First rdsys version

* Full support for bridges in the backend
* Using BridgeDB as distributor