Download the latest CircuitPython UF2 (preferably stable release if it exists) file from here.
Plug in your Raspberry Pi Pico W while pressing the BOOTSEL button. Once plugged in, it should be visible as a USB drive.
Drag and drop the adafruit-circuitpython-raspberry_pi_pico_w-xx_XX-x.x.x.x.uf2 image onto the newly visible drive. After a while, it will reload with the label CIRCUITPY.
Download the adafruit-circuitpython-bundle-8.x-mpy-xxxxxxxx.zip bundle from here.
Extract adafruit_hid, adafruit_httpserver, asyncio and adafruit_ticks.mpy from the zip file to the lib directory of the CIRCUITPY drive. The board will reload.
Modify the WiFi SSID and password in amora/settings.toml.
Copy all the files from the amora directory to the drive. The board will reload again.
Connect to the newly spawned network and go to 192.168.4.1

Video Guide

Acknowledgement

A huge thank you to David Bailey (dbisu, @dbisu) for his pico-ducky project which has served as the foundation for the HID side of this project. Although, the old code is almost nonexistent due to intensive refactoring.