add openapi or swagger

[TuxCoder]

It would be nice for understanding if there is a swagger or openapi file that describe the api.
Also it can help for implement and testing components.

https://openapi-generator.tech/
https://swagger.io/
https://www.openapis.org/

[TuxCoder]

Sorry already exists partially, would like to have a yaml or json file, but I think that can generated from this code.

Good Work!

[TuxCoder]

for who is interessted here the raw file
https://gist.github.com/TuxCoder/1fa962b97357beb3b1918172cf045a65

can be used in any openapi 2.0 viewer like https://editor.swagger.io/

[TuxCoder]

reopen, because documentation is to less, when I see what is really send.

here[1] the api is clear defined, this does not exist on the server, also invalid data in the database can cause false send data, eg. crash of client or other undefined behavior.

[1]https://github.com/austrianredcross/stopp-corona-android/blob/develop/app/src/main/java/at/roteskreuz/stopcorona/model/entities/configuration/ApiConfiguration.kt