Add community example for ST7789 LCD display driver (#179)

Display driver for ST7789 LCD display. The linked repo has a demo video.

Author: mkbrwr

README.md

@@ -54,6 +54,7 @@ Note that the SDK integration examples (Pico SDK, Zephyr SDK, etc.) are not reco
 | [Swatak](https://github.com/nelcea/EmbeddedSwift-nRF52-Swatak) | nRF52840 (Seeed Studio XIAO) | A reaction time game inspired by BATAK© boards, implemented in Embedded Swift using nRF Connect SDK. |
 | [swift-picosystem-example](https://github.com/jerrodputman/swift-picosystem-example) | PicoSystem | An Embedded Swift demo running on the Pimoroni PicoSystem |
 | [pico-swift-sh1106](https://github.com/mkbrwr/pico-swift-sh1106) | Pico 2 | Display Driver for SH1106 |
+| [swift-st7789-lcd](https://github.com/mkbrwr/swift-st7789-lcd) | Pico 2 | Display Driver for ST7789 |
 | [PlaydateKit](https://github.com/finnvoor/PlaydateKit) | Playdate | A full featured framework for building Playdate games using Embedded Swift. |
 | [swift-playdate-examples](https://github.com/swiftlang/swift-playdate-examples) | Playdate | An Embedded Swift game running on Playdate by Panic. |
 | [swift-stm32c011-examples](https://github.com/xtremekforever/swift-stm32c011-examples) | STM32 | Examples of running Embedded Swift on the STM32C011, which is a tiny MCU with only 6KB of SRAM and 32KB of flash. |