Clean up key requests + autoreload

CMakeLists.txt

io.github.NhekoReborn.Nheko.json

src/ChatPage.cpp

src/ChatPage.h

src/Olm.cpp

src/Olm.h

src/timeline/EventStore.cpp

src/timeline/EventStore.h

src/timeline/TimelineModel.h

src/timeline/TimelineViewManager.cpp

src/timeline/TimelineViewManager.h