v0.0.2 Linux RT + Go LED blink app

[0.0.2] - 2023-06-10 - PRE-RELEASE
Features
Vivado project is builadble (no testbench)
Petalinux project is buildable, kernel module is working
Golang application blinks LEDs using kernel module interrupts (if there's no module, uses POLLing)
Golang application is embedded into the build (~/blinkapp/blink.run)
Fixed
Proper gitignore for petalinux folder
Changed
Golang application simplified in terms of LED blinking
Removed
RWMutex for LED register, excessive for LED blinking

[0.0.1] - 2023-06-08 - PRE-RELEASE
Features
Vivado project is builadble (no testbench)
Petalinux project is buildable
Kernel module to handle FPGA interrupts working
Tested interrupts handling and LEDs manually
Detailed and documented Vivado and petalinux guide
Fixed
Pins for LEDs were bidir by default from board support file
Changed
Vivado project to be cleaner
Removed
Nothing

NOTE
Golang application is not ready. It's builadable but not debugged.