feat: add exercise header

src/screens/Home.tsx

@@ -1,5 +1,5 @@
 import { useState } from "react";
-import { FlatList, HStack, VStack } from "@gluestack-ui/themed";
+import { FlatList, Heading, HStack, Text, VStack } from "@gluestack-ui/themed";
 
 import { HomeHeader } from "@components/HomeHeader";
 import { Group } from "@components/Group";
@@ -32,6 +32,17 @@ export function Home() {
         }}
       />
 
+      <VStack px="$8">
+        <HStack justifyContent="space-between" mb="$5" alignItems="center">
+          <Heading color="$gray200" fontSize="$md">
+            Exercícios
+          </Heading>
+
+          <Text color="$gray200" fontSize="$sm" fontFamily="$body">
+            4
+          </Text>
+        </HStack>
+      </VStack>
     </VStack>
   )
 }