After some time passed and nothing new happened, I would like to ask.
Are there some plans to port or modify the native camera app so it can be used in other ROMs? The only way to use wide lens on /e/OS ROM in this moment is openCamera, which gives me disgusting results almost all the time. GCam ports aren’t solution as well as they lack any support of wide lens and same as openCamera, they got no support for focusing sensor. No 48Mp support neither in both apps.
I hope I’m not stuck with google-bloated stock rom for life, If I ever wanted to use my hardware freely. But so far it seems so.