feat: Implement LiteHashDRBG and RNG utilities

- Added BytesLike type for handling various byte representations.
- Implemented LiteHashDRBG class for SHA-512 based deterministic random bit generator.
- Created RNG interface defining methods for random number generation.
- Developed RandUtil class providing utility functions for RNG operations.
- Added conversion functions for BytesLike to ArrayBuffer and Uint8Array.
- Implemented comprehensive tests for RNG functionality and expected behaviors.
- Configured Vitest for testing environment setup.

packages/logic/src/util/convertBytesLikeToArrayBuffer.ts

@@ -0,0 +1,17 @@
+import type { BytesLike } from './BytesLike';
+
+export function convertBytesLikeToArrayBuffer(data: BytesLike, encodeUTF8 = true): ArrayBuffer {
+    if (data instanceof ArrayBuffer) {
+        return data;
+    }
+    if (data instanceof Uint8Array) {
+        return data.buffer;
+    }
+    if (typeof (data) === 'string') {
+        if (encodeUTF8) {
+            return (new TextEncoder()).encode(data).buffer;
+        }
+        return new Uint8Array(data.split('').map((s) => s.codePointAt(0) as number)).buffer;
+    }
+    return data.buffer;
+}