fix: add missing networks on the main page (#217)

## Summary by Sourcery

Documentation:
- Add documentation for Soneium and Fantom networks.

Author: bl0up

content/docs/about-settlemint/supported-blockchains.mdx

@@ -188,4 +188,44 @@ SettleMint currently supports the following protocols:
       <div className="text-center">Hedera Mainnet & Testnet. Full nodes</div>
     </div>
   </Card>
+
+{" "}
+
+<Card href="/blockchain-guides/soneium/the-basics">
+  <h3 className="mb-4">Soneium</h3>
+  <div className="flex flex-col items-center gap-4">
+    <div
+      style={{
+        width: "64px",
+        height: "64px",
+        display: "flex",
+        alignItems: "center",
+        justifyContent: "center",
+      }}
+    >
+      ![Soneium](../../img/about-settlemint/blockchain-logos/soneium-logo.png)
+    </div>
+    <div className="text-center">Mainnet & Testnet. Full nodes</div>
+  </div>
+</Card>
+
+{" "}
+
+<Card href="/blockchain-guides/fantom/the-basics">
+  <h3 className="mb-4">Fantom</h3>
+  <div className="flex flex-col items-center gap-4">
+    <div
+      style={{
+        width: "64px",
+        height: "64px",
+        display: "flex",
+        alignItems: "center",
+        justifyContent: "center",
+      }}
+    >
+      ![Fantom](../../img/about-settlemint/blockchain-logos/fantom-logo.png)
+    </div>
+    <div className="text-center">Mainnet & Testnet. Full nodes</div>
+  </div>
+</Card>
 </Cards>