Moved service initialization to Compose (#261)

* Moved service initialization to Compose

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Fixed issue with preferences initialization

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Add explanation

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Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>
Co-authored-by: Sunik Kupfer <kupfer@bitfire.at>