Improve the usability for incorporating multiple map tile services

[imysl0]

1. Add the mapServices.js file to facilitate the easier addition of map providers.
2. Include a dropdown menu to conveniently select different tile services.
   

[Simon-Laux]

Code LGTM, didn't test yet

[Simon-Laux]

maybe save last selected tile provider in LocalStorage?

Also we could whitelist all those providers as a temporary fix in deltachat desktop:

const hostRules = 'MAP * ~NOTFOUND, EXCLUDE *.openstreetmap.org, EXCLUDE tile.openstreetmap.org, EXCLUDE *.tile.osm.org, EXCLUDE *.tile.openstreetmap.de, EXCLUDE *.tile.openstreetmap.fr, EXCLUDE *.tile.opentopomap.org, EXCLUDE *.is.autonavi.com, EXCLUDE tm.amap.com, EXCLUDE *.map.gtimg.com, EXCLUDE *.tianditu.gov.cn'

But for a more permanent solution I'd prefer if those requests go over delta chat core (http request api), so that they respect proxy settings for that account.

[imysl0]

maybe save last selected tile provider in LocalStorage?

Also we could whitelist all those providers as a temporary fix in deltachat desktop:

const hostRules = 'MAP * ~NOTFOUND, EXCLUDE *.openstreetmap.org, EXCLUDE tile.openstreetmap.org, EXCLUDE *.tile.osm.org, EXCLUDE *.tile.openstreetmap.de, EXCLUDE *.tile.openstreetmap.fr, EXCLUDE *.tile.opentopomap.org, EXCLUDE *.is.autonavi.com, EXCLUDE tm.amap.com, EXCLUDE *.map.gtimg.com, EXCLUDE *.tianditu.gov.cn'

But for a more permanent solution I'd prefer if those requests go over delta chat core (http request api), so that they respect proxy settings for that account.

Hi Simon：
Both suggestions are pretty good, but I'm still not sure how to proceed, because I'm not a programmer. The previous code was also written with the help of AI. Let me think about it (maybe wait for AI to improve a bit, hahaha).