Move app/src (mostly) to flipper-ui-core/src

Summary:
This diff moves all UI code from app/src to app/flipper-ui-core. That is now slightly too much (e.g. node deps are not removed yet), but from here it should be easier to move things out again, as I don't want this diff to be open for too long to avoid too much merge conflicts.

* But at least flipper-ui-core is Electron free :)
* Killed all cross module imports as well, as they where now even more in the way
* Some unit test needed some changes, most not too big (but emotion hashes got renumbered in the snapshots, feel free to ignore that)
* Found some files that were actually meaningless (tsconfig in plugins, WatchTools files, that start generating compile errors, removed those

Follow up work:
* make flipper-ui-core configurable, and wire up flipper-server-core in Electron instead of here
* remove node deps (aigoncharov)
* figure out correct place to load GKs, plugins, make intern requests etc., and move to the correct module
* clean up deps

Reviewed By: aigoncharov

Differential Revision: D32427722

fbshipit-source-id: 14fe92e1ceb15b9dcf7bece367c8ab92df927a70

desktop/flipper-ui-core/src/utils/flipperLibImplementation.tsx

@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {_setFlipperLibImplementation} from 'flipper-plugin';
+import type {Logger} from 'flipper-common';
+import type {Store} from '../reducers';
+import createPaste from '../fb-stubs/createPaste';
+import GK from '../fb-stubs/GK';
+import type BaseDevice from '../devices/BaseDevice';
+import constants from '../fb-stubs/constants';
+import {addNotification} from '../reducers/notifications';
+import {deconstructPluginKey} from 'flipper-common';
+import {DetailSidebarImpl} from '../sandy-chrome/DetailSidebarImpl';
+import {RenderHost} from '../RenderHost';
+import {setMenuEntries} from '../reducers/connections';
+
+export function initializeFlipperLibImplementation(
+  renderHost: RenderHost,
+  store: Store,
+  logger: Logger,
+) {
+  _setFlipperLibImplementation({
+    isFB: !constants.IS_PUBLIC_BUILD,
+    logger,
+    enableMenuEntries(entries) {
+      store.dispatch(setMenuEntries(entries));
+    },
+    createPaste,
+    GK(gatekeeper: string) {
+      return GK.get(gatekeeper);
+    },
+    selectPlugin(device, client, pluginId, deeplink) {
+      store.dispatch({
+        type: 'SELECT_PLUGIN',
+        payload: {
+          selectedPlugin: pluginId,
+          selectedDevice: device as BaseDevice,
+          selectedAppId: client ? client.id : null,
+          deepLinkPayload: deeplink,
+          time: Date.now(),
+        },
+      });
+    },
+    writeTextToClipboard: renderHost.writeTextToClipboard,
+    openLink: renderHost.openLink,
+    showNotification(pluginId, notification) {
+      const parts = deconstructPluginKey(pluginId);
+      store.dispatch(
+        addNotification({
+          pluginId: parts.pluginName,
+          client: parts.client,
+          notification,
+        }),
+      );
+    },
+    DetailsSidebarImplementation: DetailSidebarImpl,
+    showSaveDialog: renderHost.showSaveDialog,
+    showOpenDialog: renderHost.showOpenDialog,
+    showSelectDirectoryDialog: renderHost.showSelectDirectoryDialog,
+    paths: {
+      appPath: renderHost.paths.appPath,
+      homePath: renderHost.paths.homePath,
+    },
+  });
+}