cli: add service integration for systemd (microsoft#166328)

systemd, like most 'modern' linux components, has a nice dbus API. This uses
that API to register the tunnel as a service of the calling user.

The dbus dependency is temporarily duplicated, until secret-service 3 is
released, where they update to the latest version (should be a week or two).

For microsoft/vscode-remote-tunnels#367. Next up, macOS,
then it's done :)

Author: connor4312

build/azure-pipelines/cli/prepare.js

@@ -42,6 +42,9 @@ const setLauncherEnvironmentVars = () => {
         ['VSCODE_CLI_VERSION', packageJson.version],
         ['VSCODE_CLI_UPDATE_ENDPOINT', product.updateUrl],
         ['VSCODE_CLI_QUALITY', product.quality],
+        ['VSCODE_CLI_NAME_SHORT', product.nameShort],
+        ['VSCODE_CLI_NAME_LONG', product.nameLong],
+        ['VSCODE_CLI_APPLICATION_NAME', product.applicationName],
         ['VSCODE_CLI_COMMIT', commit],
         [
             'VSCODE_CLI_WIN32_APP_IDS',

build/azure-pipelines/cli/prepare.ts

@@ -46,6 +46,9 @@ const setLauncherEnvironmentVars = () => {
 		['VSCODE_CLI_VERSION', packageJson.version],
 		['VSCODE_CLI_UPDATE_ENDPOINT', product.updateUrl],
 		['VSCODE_CLI_QUALITY', product.quality],
+		['VSCODE_CLI_NAME_SHORT', product.nameShort],
+		['VSCODE_CLI_NAME_LONG', product.nameLong],
+		['VSCODE_CLI_APPLICATION_NAME', product.applicationName],
 		['VSCODE_CLI_COMMIT', commit],
 		[
 			'VSCODE_CLI_WIN32_APP_IDS',