[Claim] Context state (#2064)

* claim state: actions

* claim state: reducer

* claim state: hooks

* added state to main index

* type enum

* extrapolate EligibleBanner

* removed eslint exception comment

* createAction conversion

* createReducer conversion and remove unnecessary types

src/custom/pages/Claim/EligibleBanner.tsx

@@ -0,0 +1,21 @@
+import { Trans } from '@lingui/macro'
+import useClaimState from './state'
+import { CheckIcon, EligibleBanner as EligibleBannerWrapper } from './styled'
+
+export default function EligibleBanner({ hasClaims }: { hasClaims: boolean }) {
+  const {
+    state: { claimAttempting, claimConfirmed, claimSubmitted, activeClaimAccount, isInvestFlowActive },
+  } = useClaimState()
+
+  const isEligible =
+    !claimAttempting && !claimConfirmed && !claimSubmitted && !!activeClaimAccount && !isInvestFlowActive && hasClaims
+
+  if (!isEligible) return null
+
+  return (
+    <EligibleBannerWrapper>
+      <CheckIcon />
+      <Trans>This account is eligible for vCOW token claims!</Trans>
+    </EligibleBannerWrapper>
+  )
+}