Add support for M5StickC Plus2

[smart40-githib]

No description provided.

[raomin]

Thanks @smart40-githib, looks good. Did you check retro compatibility with M5StickC?

[smart40-githib]

Unfortunately I only have a Plus2. The changes are mainly to use the appropriate header files when configured for the Plus2 and to replace some unsupported or deprecated calls with the M5Unified equivalents. It should be backwards compatible.

From the issues page I can see that I may have to make a small change so please hold off for now.

[smart40-githib]

The fix has been confirmed good in the issues topic, the pull request is good to go.

[redtree99]

Hi, Thanks for the fix. Just uploaded it and realised it isn't fully implemented yet, doh. Any idea when support for the plus2 will be in the core code?
Many Thanks!

[raomin]

Hmm M5 libs previous plus2 has no M5.Display.
Your code breaks for the other env.
Is M5.Axp.ScreenBreath(12); not working on M5StickC Plus2

[raomin]

... ah, it doesn't exist on M5Stickc Plus2.
I'll make it conditional then...