Feature: Use system certificate stores/custom pkcs12 file (#3675)

* for Windows use Windows certificate
* for macOS use macOS Keychain
* for Linux use a custom PKCS12 file under /etc/cryptomator/certs.p12

dist/linux/appimage/build.sh

@@ -91,6 +91,7 @@ ${JAVA_HOME}/bin/jpackage \
     --java-options "-Dcryptomator.showTrayIcon=true" \
     --java-options "-Dcryptomator.integrationsLinux.trayIconsDir=\"@{appdir}/usr/share/icons/hicolor/symbolic/apps\"" \
     --java-options "-Dcryptomator.buildNumber=\"appimage-${REVISION_NO}\"" \
+    --java-options "-Dcryptomator.networking.truststore.p12Path=\"/etc/cryptomator/certs.p12\"" \
     --resource-dir ../resources
 
 # transform AppDir

dist/linux/debian/rules

@@ -62,6 +62,7 @@ override_dh_auto_build:
 		--java-options "-Dcryptomator.appVersion=\"${SEMVER_STR}\"" \
 		--java-options "-Dcryptomator.disableUpdateCheck=\"${DISABLE_UPDATE_CHECK}\"" \
 		--java-options "-Dcryptomator.integrationsLinux.autoStartCmd=\"cryptomator\"" \
+		--java-options "-Dcryptomator.networking.truststore.p12Path=\"/etc/cryptomator/certs.p12\"" \
 		--app-version "${VERSION_NUM}.${REVISION_NUM}" \
 		--resource-dir resources \
 		--verbose