feat: optional status checks (e.g. connected peers > 0 or funded chequebook) (#331)

* feat: make some check optional (e.g. connected peers > 0 or funded chequebook)

* fix: alter setup step text to better describe what needs to be done

* refactor: rename isOk from boolean value to checkState enum

* fix: add checking for any error

src/components/StatusIcon.tsx

@@ -1,23 +1,40 @@
 import type { ReactElement } from 'react'
 import { CircularProgress } from '@material-ui/core'
+import { CheckState } from '../providers/Bee'
 
 interface Props {
-  isOk: boolean
+  checkState: CheckState
   isLoading?: boolean
   size?: number | string
   className?: string
 }
 
-export default function StatusIcon({ isOk, size, className, isLoading }: Props): ReactElement {
+export default function StatusIcon({ checkState, size, className, isLoading }: Props): ReactElement {
   const s = size || '1rem'
 
   if (isLoading) return <CircularProgress size={s} className={className} />
 
+  let backgroundColor: string
+  switch (checkState) {
+    case CheckState.OK:
+      backgroundColor = '#1de600'
+      break
+    case CheckState.WARNING:
+      backgroundColor = 'orange'
+      break
+    case CheckState.ERROR:
+      backgroundColor = '#ff3a52'
+      break
+    default:
+      // Default is error
+      backgroundColor = '#ff3a52'
+  }
+
   return (
     <span
       className={className}
       style={{
-        backgroundColor: isOk ? '#1de600' : '#ff3a52',
+        backgroundColor,
         height: s,
         width: s,
         borderRadius: '50%',