Move away from matrix-based key layout

Cargo.toml

@@ -4,17 +4,16 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-#adafruit-itsy-bitsy-rp2040 = "0.6.0"
+tgnt = { git = "https://git.nubo.sh/hulthe/tgnt.git", default-features = false }
 cortex-m = "0.7.6"
 cortex-m-rt = "0.7"
-embedded-hal ="0.2.5"
-#panic-halt= "0.2.0"
-usb-device = "*"
+embedded-hal = "0.2.5"
+#panic-halt = "0.2.0"
+usb-device = "0.2.9"
 usbd-hid = "0.6.1"
 static_cell = "1.0.0"
 embedded-io = { version = "*", features = ["async"] }
 futures = { version = "0.3", default-features = false }
-
 embassy-executor = { git = "https://github.com/embassy-rs/embassy.git", features = ["log", "nightly", "integrated-timers" ] }
 embassy-sync = { git = "https://github.com/embassy-rs/embassy.git", features = ["log", "nightly"] }
 embassy-time = { git = "https://github.com/embassy-rs/embassy.git", features = ["log"] }
@@ -22,12 +21,18 @@ embassy-futures = { git = "https://github.com/embassy-rs/embassy.git", features
 embassy-usb = { git = "https://github.com/embassy-rs/embassy.git", features = ["usbd-hid"] }
 embassy-usb-logger = { git = "https://github.com/embassy-rs/embassy.git", features = [] }
 embassy-usb-driver = { git = "https://github.com/embassy-rs/embassy.git", features = [] }
-
 embassy-rp = { git = "https://github.com/embassy-rs/embassy.git", features = ["log", "nightly", "unstable-traits", "unstable-pac", "time-driver", "pio", "critical-section-impl"] }
 log = "0.4.17"
 pio = "0.2.1"
 pio-proc = "0.2.1"
 smart-leds = "0.3.0"
+embedded-alloc = "0.5.0"
+postcard = { version = "1.0.4", features = ["alloc"] }
+
+[build-dependencies]
+tgnt = { git = "https://git.nubo.sh/hulthe/tgnt.git", default-features = false }
+ron = "0.8.0"
+postcard = { version = "1", features = ["use-std"] }
 
 [features]
 default = ["n-key-rollover"]