feat: create harmony_composer initial version + rework CI (#58)

Co-authored-by: tahahawa <tahahawa@gmail.com>
Reviewed-on: #58
Reviewed-by: johnride <jg@nationtech.io>
Co-authored-by: Taha Hawa <taha@taha.dev>
Co-committed-by: Taha Hawa <taha@taha.dev>

Dockerfile

@@ -0,0 +1,25 @@
+FROM docker.io/rust:1.87.0 AS build
+
+WORKDIR /app
+
+COPY . .
+
+RUN cargo build --release --bin harmony_composer
+
+FROM docker.io/rust:1.87.0
+
+WORKDIR /app
+
+RUN rustup target add x86_64-pc-windows-gnu
+RUN rustup target add x86_64-unknown-linux-gnu
+RUN rustup component add rustfmt
+
+RUN apt update
+
+# TODO: Consider adding more supported targets
+# nodejs for checkout action, docker for building containers, mingw for cross-compiling for windows
+RUN apt install -y nodejs docker.io mingw-w64
+
+COPY --from=build /app/target/release/harmony_composer .
+
+ENTRYPOINT ["/app/harmony_composer"]