Move the example into an independent crate

To avoid exporting Ravedude, .cargo/config.toml, rust-toolchain.toml
that were present at the root of the repository, create a binary crate
to have a standalone example

Author: n-eq

examples/arduino-uno-pcd8544/.cargo/config.toml

@@ -0,0 +1,9 @@
+[build]
+target = "avr-none"
+rustflags = ["-C", "target-cpu=atmega328p"]
+
+[target.'cfg(target_arch = "avr")']
+runner = "ravedude"
+
+[unstable]
+build-std = ["core"]

examples/arduino-uno-pcd8544/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "arduino-uno-pcd8544"
+version = "0.0.0"
+authors = ["Nabil Elqatib <nabilelqatib@gmail.com>"]
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[[bin]]
+name = "arduino-uno-pcd8544"
+test = false
+bench = false
+
+[dependencies]
+panic-halt = "1.0.0"
+pcd8544-hal = { path = "../.." }
+arduino-hal = { git = "https://github.com/Rahix/avr-hal", rev = "ravedude-0.2.0", features = ["arduino-uno"] }
+
+
+[profile.dev]
+panic = "abort"
+lto = true
+opt-level = "s"
+
+[profile.release]
+panic = "abort"
+codegen-units = 1
+lto = true
+opt-level = "s"

Ravedude.toml renamed to examples/arduino-uno-pcd8544/Ravedude.toml

@@ -1,4 +1,4 @@
 [toolchain]
 channel = "nightly-2025-04-27"
-components = [ "rust-src" ]
+components = ["rust-src"]
 profile = "minimal"