Add V2 SKR Pico wiring diagram

[GadgetAngel]

added the BTT SKR Pico file (v2_skr_pico_wiring.md) reused the following from V0.1 setup: a. skr_pico_RaspberryPi.md b. skr_pico_Resources.md added initial Removal of Jumpers picture added Initial Preparation - Set Jumpers picture Added Voltage Selection header and other headers added a check boxes next to each item on the MCU description so the user can check of the items as he goes, if he wants. I had to enable the check boxes to be interactive by adding a JS function to the just-the-docs.js file. New function called "enable_checkboxes();" -- but this will not work until the toggle color scheme is added to the site. added a term definition for BAT85 below the MCU description added section about Stepper Motor Drivers Added wiring diagram for V2 BTT SKR Pico using two SKR 2 boards Added the ability to download the wiring diagrams added the description about BTT SKR Pico UART communications with Raspberry pi with diagram added a diagram showing how to hook up independent power supply for Raspberry pi added SSR wiring diagram using two BTT SKR Pico boards added the ability to download the SSR wiring diagrams added the new Color Pin diagram for BTT SKR Pico Added link so Voron users can download the Color PIN diagram from this page in both .pdf and .jpg format Added the ability to examine the Color PIN diagram with ZOOM function added original BTT SKR Pico pinout added "if pin diagrams do not match check the schematic diagram" section, provide link to BTT SKR Pico schematic diagram Added the ability to examine the original pinout diagram with ZOOM capability

compressed all pictures and diagrams so the page load time is fast. Checked these pages by running the server locally on my Windows machine, then if everything works, uploaded them to my LIVE TEST Voron Docs site at https://gadgetangel.org/ so I can see if there are any interactions between all the pull requests I have submitted thus far.