Add support for `OnePlusN200TMO`

[Scraptime]

Is your device already requested?

• I have searched the existing issues

Brand

oneplus

Name

nord n200 5g (T-Mobile edition)

Device code

OnePlusN200TMO

Model

No response

Device images

No response

Do you own the device and would be willing to test the installer?

• I own the device and am willing to test the installer on it.

Additional context

No response

[tsterbak]

Seems to be different from the N200 (dre). There seems no TWRP nor LineageOS available at the moment. Maybe the N200 images work, but it's hard to tell.

[SirRGB]

https://github.com/LineageOS/android_device_oneplus_dre/blob/lineage-20/BoardConfig.mk#L47

Seems to just work, Ill add it in my assert pr.

#364

[SirRGB]

The commit doesnt fully fix the issue, I found this.

https://xdaforums.com/t/the-quest-for-a-bootloader-unlock-partial-guide-t-mobile-variant-may-work-for-metropcs-metro-variant.4313525/

Sim unlock
https://xdaforums.com/t/t-mobile-usa-free-sim-unlocking-service-oneplus-samsung-google-lg-moto.4231597

AND
"adb shell pm uninstall --user 0 com.qualcomm.qti.uim"
That should be all changes required to unlock the tmobile version over the regular version.

Edit:
Requires an unlock code by oneplus.
See #395

[SirRGB]

I think we should make a new config with additional notes, will drop the tmo assert changes for now.

[SirRGB]

SirRGB@37818fa

I did this, but dk if hyperlinks just work in configs and if linking the guides is enough.
@tsterbak do you know any better way of doing this?