UTFT library usage

[prasimix]

According to author of UTFT hosting of any variant of his library is a crime, and since UTFT_Pro is removed from the GitHub we have to remove UTFT_Pro from our distribution and forward users to download library from his site. That will also require the following changes in lcd.cpp:

#define TFT_320QVT_9341 CTE32_R2

Remove all other libraries from the project and do the following:

• Open a new project for eez_psu_lib
• Create fork within eez-open project for Ethernet2, scpi-parser and UIPEthernet
• Write help file how to collect libraries for that firmware can be successfully compiled

When latest UTFT library is used, screen colors looks "weird" and vertical (scan?) lines are clearly visible on the background color that was not hte case with UTFT_Pro. Maybe some user will find that unattractive and would like to stick with UTFT_Pro. Therefore we should allow firmware compilation with both UTFT and UTFT_Pro. Other possibility is to invest some time and find out how UTFT_Pro works with display that colors looks more appealing.

Another path for ILI9314 based displays is to try to use Adafruit library that is completely open source (MIT license).

[prasimix]

See also #75

[mvladic]

Following libraries are removed from the project:

• Ethernet2
• UIPEthernet
• UTFT_Pro

We created following forks of third party libraries:

• https://github.com/eez-open/Ethernet2
• https://github.com/eez-open/arduino_uip
• https://github.com/eez-open/scpi-parser

For now, we will keep eez_psu_lib and scpi-parser inside this project.