Add pluginClient to fix unstyled Plugin

Only after adding the PluginClient (that imports @remixproject/plugin-webview) the
contract-verification-plugin started to inherit Remix styles

apps/contract-verification/src/app/ContractVerificationPluginClient.ts

@@ -0,0 +1,14 @@
+import {PluginClient} from '@remixproject/plugin'
+import {createClient} from '@remixproject/plugin-webview'
+import EventManager from 'events'
+
+export class ContractVerificationPluginClient extends PluginClient {
+  public internalEvents: EventManager
+
+  constructor() {
+    super()
+    this.internalEvents = new EventManager()
+    createClient(this)
+    this.onload()
+  }
+}

apps/contract-verification/src/app/app.tsx

@@ -1,12 +1,16 @@
 import React, {useState, useEffect, useRef} from 'react'
 
+import {ContractVerificationPluginClient} from './ContractVerificationPluginClient'
+
 import {AppContext} from './AppContext'
 import DisplayRoutes from './routes'
-
+import {CustomTooltip} from '@remix-ui/helper'
 import {ThemeType} from './types'
 
 import './App.css'
 
+const plugin = new ContractVerificationPluginClient()
+
 const App = () => {
   const [themeType, setThemeType] = useState<ThemeType>('dark')