feat: speed up openjfx dependencies checking

SHA-1 of dependencies are defined in openjfx-dependencies.json
to avoid network requests during startup.

openjfx-dependencies.json can be generated using
tools/generate-openjfx-dependencies.sh

tools/generate-openjfx-dependencies.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -e
+
+modules=(base controls fxml graphics media web)
+arches=(linux mac win)
+version=16
+
+echo '['
+for module in ${modules[@]}; do
+	if [[ ! "$module" == "${modules[0]}" ]]; then
+		echo ','
+	fi
+	echo '  {'
+	echo '    "module": "javafx.'$module'",'
+	echo '    "groupId": "org.openjfx",'
+	echo '    "artifactId": "javafx-'$module'",'
+	echo '    "version": "'$version'",'
+	echo '    "sha1": {'
+	for arch in ${arches[@]}; do
+		if [[ ! "$arch" == "${arches[0]}" ]]; then
+			echo ','
+		fi
+		echo -n '      "'$arch'": "'$(curl -Ss "https://repo1.maven.org/maven2/org/openjfx/javafx-$module/$version/javafx-$module-$version-$arch.jar.sha1")'"'
+	done
+	echo
+	echo '    }'
+	echo -n '  }'
+done
+echo
+echo ']'