[Request]: connectivity_plus does not support chrome extension

### Plugin

connectivity_plus

### Use case

I don't know for some reason, but Chrome Extension doesn't work.

```
main.dart.js:11181 Uncaught MissingPluginException(No implementation found for method check on channel dev.fluttercommunity.plus/connectivity)
at Object.wrapException (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:6891:17)
at chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:99757:25
at _wrapJsFunctionForAsync_closure.$protected (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:9425:15)
at _wrapJsFunctionForAsync_closure.call$2 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:55510:12)
at _awaitOnObject_closure.call$1 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:55498:32)
at _RootZone.runUnary$2$2 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:56554:18)
at _RootZone.runUnary$2 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:56558:19)
at _Future__propagateToListeners_handleValueCallback.call$0 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:55997:51)
at Object._Future__propagateToListeners (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:9606:93)
at _Future._completeWithValue$1 (chrome-extension://efnknhbbkmieamebecphhjmhjgmfjgej/main.dart.js:55857:9)
```

### Proposal

I want it to work normally with Chrome extension

Inizia riproducendo il malfunzionamento dell’estensione Chrome e tracciando il method channel dev.fluttercommunity.plus/connectivity, in particolare il metodo check indicato nell’eccezione. Il lavoro è completato quando il plugin fornisce un risultato di connettività funzionante in un’estensione Chrome invece di generare MissingPluginException; nell’issue non sono identificati file sorgente né test.

Scritto dal modello di indicizzazione a partire dal testo della issue.