PPA Collect exposure windows (EXPOSUREAPP-4819) #2387

* comments

* persistence

* database

* revert unrelated changes

* revert unrelated changes

* detekt

* extract collector

* unused

* unit test donor

* klint

* unit tests

* unit tests and db test

* naming error

* unmock object

* clear and unmock object

* make static

* make static

* comments and additional tests

* inject probability

* check for new before insert

* Merge branch 'release/1.14.x' into feature/4819-exposure-window

# Conflicts:
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/datadonation/analytics/AnalyticsModule.kt

* fix test

* review comments

* review comments

* measure time for db insertion

* adjust test

* klint