fix: wallet balance

- fiat balance display
- currency formatting
- added tests for WalletBalance
- added test coverage scripts
- bumped haveno-ts to v0.0.5

---

Reviewed-by: localredhead

packages/renderer/src/hooks/haveno/usePrice.ts

@@ -0,0 +1,46 @@
+// =============================================================================
+//  Copyright 2022 Haveno
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+// =============================================================================
+
+import { useEffect, useState } from "react";
+import { usePrices } from "./usePrices";
+
+export function usePrice(currencyCode?: string) {
+  const [data, setData] = useState(0);
+  const [error, setError] = useState("");
+
+  const { data: prices, isLoading, isSuccess, error: _error } = usePrices();
+
+  useEffect(() => {
+    if (!currencyCode) {
+      return;
+    }
+    if (!isSuccess) {
+      setError(_error?.message ?? "Something went wrong");
+      return;
+    }
+    const price = (prices ?? []).find(
+      (price) => price.currencyCode === currencyCode
+    );
+    if (!price) {
+      setError("Unknown currency code");
+      return;
+    }
+    setData(price.price);
+    setError("");
+  }, []);
+
+  return { data, isLoading, isSuccess, error, isError: Boolean(error) };
+}