Add nixie-build

Signed-off-by: Marcel Müller <neikos@neikos.email>

nixie-build/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "nixie-build"
+edition.workspace = true
+version.workspace = true
+license.workspace = true
+authors.workspace = true
+readme.workspace = true
+
+[dependencies]

nixie-build/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}