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/chrome/ExportDataPluginSheet.tsx

@@ -0,0 +1,59 @@
+/**
+ * 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 {connect} from 'react-redux';
+import React, {Component} from 'react';
+import {State as Store} from '../reducers';
+import ListView from './ListView';
+import {FlexColumn, styled} from '../ui';
+import {getExportablePlugins} from '../selectors/connections';
+
+type OwnProps = {
+  onHide: () => void;
+  selectedPlugins: Array<string>;
+  setSelectedPlugins: (plugins: string[]) => void;
+};
+
+type StateFromProps = {
+  availablePluginsToExport: Array<{id: string; label: string}>;
+};
+
+type Props = OwnProps & StateFromProps;
+
+const Container = styled(FlexColumn)({
+  maxHeight: 700,
+  padding: 8,
+});
+
+class ExportDataPluginSheet extends Component<Props, {}> {
+  render() {
+    return (
+      <Container>
+        <ListView
+          type="multiple"
+          title="Select the plugins for which you want to export the data"
+          leftPadding={8}
+          onChange={(selectedArray) => {
+            this.props.setSelectedPlugins(selectedArray);
+          }}
+          elements={this.props.availablePluginsToExport}
+          selectedElements={new Set(this.props.selectedPlugins)}
+          onHide={() => {}}
+        />
+      </Container>
+    );
+  }
+}
+
+export default connect<StateFromProps, {}, OwnProps, Store>((state) => {
+  const availablePluginsToExport = getExportablePlugins(state);
+  return {
+    availablePluginsToExport,
+  };
+})(ExportDataPluginSheet);