Allow to install packed extensions from URL or local file (#1456)

* Option to install an extension from filesystem/url #1227 -- part 1 (UI)

Signed-off-by: Roman <ixrock@gmail.com>

* DropFileInput: common component to handle droped files (replaced also in add-cluster-page)

Signed-off-by: Roman <ixrock@gmail.com>

* fix: install via url-string on input.submit

Signed-off-by: Roman <ixrock@gmail.com>

* ui tweaks & minor fixes

Signed-off-by: Roman <ixrock@gmail.com>

* more ui/ux tweaks & fixes

Signed-off-by: Roman <ixrock@gmail.com>

* layout fixes

Signed-off-by: Roman <ixrock@gmail.com>

* component renaming: `copy-to-click` => `copy-to-clipboard` => `clipboard`

Signed-off-by: Roman <ixrock@gmail.com>

* reworks -- part 1

Signed-off-by: Roman <ixrock@gmail.com>

* fix downloading file, added common/utils/downloadFile

Signed-off-by: Roman <ixrock@gmail.com>

* confirm before install, unpack tar first steps

Signed-off-by: Roman <ixrock@gmail.com>

* installation flow, extracting .tgz

Signed-off-by: Roman <ixrock@gmail.com>

* clean up, fix lint issues

Signed-off-by: Roman <ixrock@gmail.com>

* update .azure-pipelines.yml

Signed-off-by: Roman <ixrock@gmail.com>

* fixes & refactoring

Signed-off-by: Roman <ixrock@gmail.com>

* fix lint harder :/

Signed-off-by: Roman <ixrock@gmail.com>

* fix validation

Signed-off-by: Roman <ixrock@gmail.com>

* fix validation harder

Signed-off-by: Roman <ixrock@gmail.com>

* responding to comments, fixed package validation

Signed-off-by: Roman <ixrock@gmail.com>

* common/utils/tar.ts: reject with Error-type

Signed-off-by: Roman <ixrock@gmail.com>

* fix: unit-tests

Signed-off-by: Roman <ixrock@gmail.com>

src/main/menu.ts

@@ -1,7 +1,7 @@
 import { app, BrowserWindow, dialog, ipcMain, IpcMainEvent, Menu, MenuItem, MenuItemConstructorOptions, webContents, shell } from "electron";
 import { autorun } from "mobx";
 import { WindowManager } from "./window-manager";
-import { appName, isMac, isWindows, isTestEnv } from "../common/vars";
+import { appName, isMac, isWindows, isTestEnv, docsUrl, supportUrl } from "../common/vars";
 import { addClusterURL } from "../renderer/components/+add-cluster/add-cluster.route";
 import { preferencesURL } from "../renderer/components/+preferences/preferences.route";
 import { whatsNewURL } from "../renderer/components/+whats-new/whats-new.route";
@@ -24,6 +24,7 @@ export function showAbout(browserWindow: BrowserWindow) {
     `${appName}: ${app.getVersion()}`,
     `Electron: ${process.versions.electron}`,
     `Chrome: ${process.versions.chrome}`,
+    `Node: ${process.versions.node}`,
     `Copyright 2020 Mirantis, Inc.`,
   ];
   dialog.showMessageBoxSync(browserWindow, {
@@ -215,13 +216,13 @@ export function buildMenu(windowManager: WindowManager) {
       {
         label: "Documentation",
         click: async () => {
-          shell.openExternal('https://docs.k8slens.dev/');
+          shell.openExternal(docsUrl);
         },
       },
       {
         label: "Support",
         click: async () => {
-          shell.openExternal('https://docs.k8slens.dev/latest/support/');
+          shell.openExternal(supportUrl);
         },
       },
       ...ignoreOnMac([