chore: Create Justfile

Signed-off-by: Awiteb <a@4rs.nl>

Justfile

@@ -0,0 +1,26 @@
+set shell := ["/usr/bin/env", "bash", "-c"]
+
+JUST_EXECUTABLE := "just -u -f " + justfile()
+header := "Available tasks:\n"
+# Get the MSRV from the Cargo.toml
+msrv := `cat Cargo.toml | grep "rust-version" | sed 's/.*"\(.*\)".*/\1/'`
+
+
+_default:
+    @{{JUST_EXECUTABLE}} --list-heading "{{header}}" --list
+
+@test test_name='':
+    cargo test {test_name}
+
+# Run the CI
+@ci: && msrv test
+    cargo build --all-targets
+    cargo fmt --all -- --check
+    cargo clippy --all-targets -- -D warnings
+
+# Check that the current MSRV is correct
+@msrv:
+    rustup toolchain install {{msrv}}
+    echo "Checking MSRV ({{msrv}})"
+    cargo +{{msrv}} check -q --workspace
+    echo "MSRV is correct"