Adding capacitive touch support to the simulator

[FMounz]

Description:

This PR adds the capacitive touch to the supported sensors. To simulate the touch of one of the pin click on it once. and it change its state to touch , click on it once more and it is untouched. numeric pad (key 1 to 7) can be used also to simulate the touch.The value of those pin can be retrieved by the user with cpx.touch_A

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Limitations:

Please describe limitations of this PR

Testing:

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [ ]The touch pin change color when clicked or corresponding key pressed

-[]Add to code.py an example code that use cpx.touch_A. The Simulator should be updated accordingly. Example:

from adafruit_circuitplayground.express import cpx
while True:
cpx.red_led = cpx.touch_A6

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[LukeSlev]

Stopping the simulator does not remove the "touches". Should it? I feel like that may be a good idea

[LukeSlev]

@FMounz Some comments. Also you should sync with @MichelleYAOOO because I think we want the capacitive touch to work like the buttons in terms of clicking them. people can use the keyboard if they want to press more than one at the same time. Also, there are some premade css classes that you could use in that file like https://github.com/microsoft/vscode-python-embedded/blob/users/t-famoun/capacitive_touch/src/view/components/cpx/Cpx_svg_style.tsx#L257

[LukeSlev]

Also the capacitive touch pins don't work like buttons do (border stroke width gets bigger and its an orange color).They probably should

[FMounz]

@LukeSlev

The color on the button is attenuated by the gray border, it is not lighter

[LukeSlev]

@FMounz Sorry one last thing can you please add python tests