src: attempt to make the hierachy more nice

Makefile

@@ -1,2 +1,17 @@
 all:
-	cargo run
+	@ printf '%s\n' "Unknown option parsed in target all" ; exit 2
+
+run:
+	@ cargo run \
+		--jobs "$$(nproc)" \
+		--target-dir "target" \
+		--manifest-path="$$(pwd)/src/Cargo.toml"
+
+build:
+	@ cargo build \
+		--jobs "$$(nproc)" \
+		--target-dir "target" \
+		--manifest-path="$$(pwd)/src/Cargo.toml"
+
+release:
+	@ printf '%s\n' "FIXME: Release logic needed" ; exit 1

src/Cargo.toml

@@ -4,7 +4,9 @@ version = "0.1.0"
 authors = ["Kreyren <KostWarCZE@RiXotStudio.cz>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[[bin]]
+name = "main-bin"
+path = "main.rs"
 
 [dependencies]
 clap = "*"