chore: organize KeyringRpcMethod enum by category (#441)

The `KeyringRpcMethod` enum lists RPC methods in an arbitrary order,
making it harder to find related methods at a glance.

This PR reorganizes the enum entries into logical groups with comments:
- Account management
- Signing request management
- Account assets and transactions
- Dapp interaction

## Examples

N/A - This is a code organization change with no functional impact.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Reorganizes `KeyringRpcMethod` into logical groups with comments to
improve scanability.
> 
> - Groups methods under: **Account management**, **Signing request
management**, **Account assets and transactions**, and **Dapp
interaction**
> - Only reorders enum entries and adds comments; no changes to method
names, values, or logic
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
0c61b08. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: danroc

packages/keyring-api/src/rpc.ts

@@ -34,24 +34,31 @@ import {
  * Keyring RPC methods used by the API.
  */
 export enum KeyringRpcMethod {
-  ListAccounts = 'keyring_listAccounts',
-  GetAccount = 'keyring_getAccount',
+  // Account management
   CreateAccount = 'keyring_createAccount',
+  DeleteAccount = 'keyring_deleteAccount',
   DiscoverAccounts = 'keyring_discoverAccounts',
-  ListAccountAssets = 'keyring_listAccountAssets',
-  ListAccountTransactions = 'keyring_listAccountTransactions',
-  GetAccountBalances = 'keyring_getAccountBalances',
-  ResolveAccountAddress = 'keyring_resolveAccountAddress',
+  ExportAccount = 'keyring_exportAccount',
   FilterAccountChains = 'keyring_filterAccountChains',
+  GetAccount = 'keyring_getAccount',
+  ListAccounts = 'keyring_listAccounts',
   UpdateAccount = 'keyring_updateAccount',
-  DeleteAccount = 'keyring_deleteAccount',
-  ExportAccount = 'keyring_exportAccount',
-  ListRequests = 'keyring_listRequests',
-  GetRequest = 'keyring_getRequest',
-  SubmitRequest = 'keyring_submitRequest',
+
+  // Signing request management
   ApproveRequest = 'keyring_approveRequest',
+  GetRequest = 'keyring_getRequest',
+  ListRequests = 'keyring_listRequests',
   RejectRequest = 'keyring_rejectRequest',
+  SubmitRequest = 'keyring_submitRequest',
+
+  // Account assets and transactions
+  GetAccountBalances = 'keyring_getAccountBalances',
+  ListAccountAssets = 'keyring_listAccountAssets',
+  ListAccountTransactions = 'keyring_listAccountTransactions',
   SetSelectedAccounts = 'keyring_setSelectedAccounts',
+
+  // Dapp interaction
+  ResolveAccountAddress = 'keyring_resolveAccountAddress',
 }
 
 /**