add a intro in the home page

apps/zzz-frontend/src/app/PageHome.tsx

@@ -1,4 +1,28 @@
-// TODO: Move this to a lib
+import { CardThemed } from '@genshin-optimizer/common/ui'
+import { CardContent, Typography } from '@mui/material'
+
 export default function PageHome() {
-  return <>home page</>
+  return (
+    <CardThemed sx={{ my: 1 }}>
+      <CardContent>
+        <Typography variant="h5">I know what this looks like...</Typography>
+        <Typography>
+          This <strong>is</strong> my rendition of Zenless Optimizer. You have
+          to understand, this is the result of asking,
+        </Typography>
+        <Typography variant="caption">
+          "What is the most Optimizer I can, if I was cutting corners like it's
+          crunch time at a circle factory?" — frzyc, probably
+        </Typography>
+        <Typography>
+          I know a lot of stuff isn't implemented, and the stuff that are, are
+          super ugly. This is only like 10 hours of coding, cut me some slack.
+        </Typography>
+        <Typography sx={{ my: 1 }}>Have an optimial day,</Typography>
+        <Typography>
+          <strong>frzyc</strong>
+        </Typography>
+      </CardContent>
+    </CardThemed>
+  )
 }