*Add new utilities on plugin api

*add access to compact-encoding via binaryEncoding
*add access to b4a via bufferEncoding
*add crypto utility with createHash helper

src/modules/plugin.ts

@@ -19,6 +19,7 @@ import {
 import { get as getSSl, SSLManager } from "./ssl.js";
 import type { HDKey } from "micro-ed25519-hdkey";
 import corePlugins from "../plugins";
+import Util from "./plugin/util";
 
 let pluginAPIManager: PluginAPIManager;
 let pluginAPI: PluginAPI;
@@ -51,6 +52,12 @@ class PluginAPI extends EventEmitter2 {
     this._swarm = swarm;
   }
 
+  private _util: Util = new Util();
+
+  get util(): Util {
+    return this._util;
+  }
+
   private _swarm: any;
 
   get swarm(): any {

src/modules/plugin/util.ts

@@ -0,0 +1,19 @@
+import Crypto from "./util/crypto";
+import b4a from "b4a";
+// @ts-ignore
+import c from "compact-encoding";
+
+export default class Util {
+  private _crypto: Crypto = new Crypto();
+
+  get crypto(): Crypto {
+    return this._crypto;
+  }
+  get bufferEncoding(): typeof b4a {
+    return b4a;
+  }
+
+  get binaryEncoding(): typeof c {
+    return c;
+  }
+}

src/modules/plugin/util/crypto.ts

@@ -0,0 +1,14 @@
+// @ts-ignore
+import sodium from "sodium-universal";
+import { getPluginAPI } from "../../plugin";
+
+export default class Crypto {
+  createHash(data: string): Buffer {
+    const b4a = getPluginAPI().util.bufferEncoding;
+    const buffer = b4a.from(data);
+    let hash = b4a.allocUnsafe(32) as Buffer;
+    sodium.crypto_generichash(hash, buffer);
+
+    return hash;
+  }
+}