Update AndroidManifest.xml to implement background location permission

[eplinux]

In Android 10, a new permission is needed to access location in background.

[ghost]

@mar-v-in can you please merge this asap? UnifiedNLP is currently not functional on Android 10 in the background.

[ploink]

@mar-v-in I agree with @p4t44.
Some more details why we need it:

• I forked Local-GSM-Backend and the only way I could get network location to work reliably with Osmand is to remove the COARSE_LOCATION permission requirement from the <service> tag in the manifest This means that microG, or any other app does not need any permission whatsoever to talk to the backend and get a location. As soon as this patch is merged and released I can close this security hole.

• I have several apps that use Fused Location. Only when I take microG settings to the foreground they can briefly get a location, but short time after it has gone to the background, fused location stops working. I think this background location permission would fix that.

• I used apktool to unpack the opengapps nano apk and it also has this permission in the manifest.

Thanks in advance.

[mar-v-in]

This has been part of the big refactoring.