Add Makefile for building signed, notarized pkg of SwiftPM package

.gitignore

@@ -1,7 +1,10 @@
 *.pkg
+pkg
 .DS_Store
 *.log
+.build
 build
+artifacts
 
 .swiftpm
-.vscode
+.vscode

Makefile

@@ -0,0 +1,62 @@
+PRODUCT = $(shell /usr/bin/plutil -extract CFBundleName raw Sources/Resources/Info.plist)
+VERSION = $(shell /usr/bin/plutil -extract CFBundleShortVersionString raw Sources/Resources/Info.plist)
+BUNDLE_ID = $(shell /usr/bin/plutil -extract CFBundleIdentifier raw Sources/Resources/Info.plist)
+
+BINARY = .build/apple/Products/Release/${PRODUCT}
+PKG_ROOT = ./pkg/${PRODUCT}-${VERSION}
+PKG_DIR =  ${PKG_ROOT}/usr/local/bin
+ARTIFACTS_DIR = "artifacts"
+NONDIST_PKG = ${ARTIFACTS_DIR}/intermediary_${PRODUCT}-${VERSION}.pkg
+PKG = ${ARTIFACTS_DIR}/${PRODUCT}-${VERSION}.pkg
+
+CODESIGN_IDENTITY = "Developer ID Application: Kyle Crawford (Z5J8CJBUWC)"
+PKG_CODESIGN_IDENTITY = "Developer ID Installer: Kyle Crawford (Z5J8CJBUWC)"
+NOTARY_KEYCHAIN_PROFILE = "notarytool.dockutil.com"
+
+
+${BINARY}:
+	swift build -c release --product ${PRODUCT} --arch arm64 --arch x86_64
+	xcrun codesign -s ${CODESIGN_IDENTITY} \
+               --options=runtime \
+               --timestamp \
+               ${BINARY}
+
+${PKG}: ${BINARY}
+	rm -rf "${PKG_ROOT}" || true
+	mkdir -p ${PKG_DIR}
+	mkdir -p ${ARTIFACTS_DIR}
+	cp ${BINARY} ${PKG_DIR}
+	xcrun pkgbuild --root ${PKG_ROOT} \
+           --identifier "${BUNDLE_ID}" \
+           --version "${VERSION}" \
+           --install-location "/" \
+           --sign ${PKG_CODESIGN_IDENTITY} \
+           ${NONDIST_PKG}
+	productbuild --package ${NONDIST_PKG} \
+           --identifier "${BUNDLE_ID}" \
+           --version "${VERSION}" \
+           --sign ${PKG_CODESIGN_IDENTITY} \
+           ${PKG}
+
+.PHONY: build
+build: ${BINARY}
+
+.PHONY: package
+package: ${PKG}
+
+.PHONY: notarize
+notarize: ${PKG}
+	xcrun notarytool submit ${PKG} \
+          --keychain-profile ${NOTARY_KEYCHAIN_PROFILE} \
+          --wait
+
+.PHONY: staple
+staple:
+	xcrun stapler staple "${PKG}"
+
+.PHONY: clean
+clean:
+	swift package clean
+
+.PHONY: release
+release: clean package notarize staple