move plugin management from ui-core to server-core

Summary:
Follow up of D32665064, this diff moves all plugin management logic from flipper-ui to flipper-server. Things like downloading, installing, querying new plugins.

Loading plugins is handled separately in the next diff.

Reviewed By: nikoant

Differential Revision: D32666537

fbshipit-source-id: 9786b82987f00180bb26200e38735b334dc4d5c3

desktop/flipper-ui-core/src/chrome/plugin-manager/PluginPackageInstaller.tsx

@@ -17,8 +17,8 @@ import {
 } from '../../ui';
 import styled from '@emotion/styled';
 import React, {useState} from 'react';
-import {installPluginFromFile} from 'flipper-plugin-lib';
 import {Toolbar, FileSelector} from 'flipper-plugin';
+import {getRenderHostInstance} from '../../RenderHost';
 
 const CenteredGlyph = styled(Glyph)({
   margin: 'auto',
@@ -51,7 +51,10 @@ export default function PluginPackageInstaller({
     setError(undefined);
     setInProgress(true);
     try {
-      await installPluginFromFile(path);
+      await getRenderHostInstance().flipperServer!.exec(
+        'plugins-install-from-file',
+        path,
+      );
       await onInstall();
     } catch (e) {
       setError(e);