Confidential transfer overview doc (#3393)

* doc: add confidential extension doc structure

* doc: add encryption and zkp description in confidential extension doc

* doc: add usability and crypto features

Author: samkim-crypto

docs/sidebars.js

@@ -20,8 +20,8 @@ module.exports = {
     "name-service",
     "shared-memory",
     {
-      type: 'category',
-      label: 'Stake Pool',
+      type: "category",
+      label: "Stake Pool",
       collapsed: true,
       items: [
         "stake-pool",
@@ -31,5 +31,24 @@ module.exports = {
       ],
     },
     "feature-proposal",
+    {
+      type: "category",
+      label: "Confidential Token Extension",
+      collapsed: true,
+      items: [
+        "confidential-token",
+        "confidential-token/quickstart",
+        {
+          type: "category",
+          label: "Protocol Deep Dive",
+          collapsed: true,
+          items: [
+            "confidential-token/deep-dive/overview",
+            "confidential-token/deep-dive/encryption",
+            "confidential-token/deep-dive/zkps",
+          ],
+        },
+      ],
+    },
   ],
 };

docs/src/confidential-token.md

@@ -0,0 +1,3 @@
+---
+title: Introduction
+---

docs/src/confidential-token/deep-dive/encryption.md

@@ -0,0 +1,3 @@
+---
+title: Encryption
+---