Master al

[alorbach]

Made many changes to add support for more camera sensor properties, AsyncClient support (ESPAsyncWebServer) and much more. Feel free to use my branch, it's last rebase is from 2020-12-06.

• added rgb888 format output.
• Added more functions to set camera sensor properties

1. Contrast
2. Brightness
3. Saturation
4. SpecialEffect
5. WbMode
6. AeLevels
7. AgcGain
8. GainceilingSensor
9. Gaincontrol
10. Colorbar
11. Whitebalance
12. Quality
13. Aec2
14. AecValue
15. AwbGainControl
16. HMirror
17. VFlip
18. Frequence
19. BPC
20. WPC
21. Denoise
22. Lenc
23. RawGMA
24. AutoExposurecontrol
25. Dcw

• esp32-camera: fix compatibility issue caused by commit ae32d52c See https://github.com/espressif/esp32-camera/commit/ae32d52cc27136d3b37ebcb4efc187dcdeb5fdf0#diff-a00662a8f0e0727f691f0ff27d0dd00a3721195193dad7b9b3dffb3f4d8591cc
• add lastEspErr variable to store esp32 camera api return values

For now I will maintaine rebase support for my branch as long as possible.

[alorbach]

have you confirmed the changes I made ?

[alorbach]

I will keep my branch rebased on your master as long as possible. When I get the time to create some samples, I will amend them to my branch here. Right now I am just to busy doing them.