Implement Integral Data Types (#13)

**Rationale:**

Integral Types were missing and are needed for Project Nautilus.

**Changes:**

- Implements Integral Data Types
  - u64 and i64 implemented through bigint

Reviewed-on: #13
Co-authored-by: Sergey Savelyev <sergeysav.nn@gmail.com>
Co-committed-by: Sergey Savelyev <sergeysav.nn@gmail.com>

frontend/src/composables/websocket.ts

@@ -12,6 +12,7 @@ import {
 } from 'vue';
 import type { TelemetryDefinition } from '@/composables/telemetry';
 import { onDocumentVisibilityChange } from '@/composables/document.ts';
+import { parseJsonString, toJsonString } from '@/composables/json.ts';
 
 export interface TelemetryDataItem {
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -71,7 +72,7 @@ export class WebsocketHandle {
             }
         });
         this.websocket.addEventListener('message', (event) => {
-            const message = JSON.parse(event.data);
+            const message = parseJsonString(event.data);
             if (message['TlmValue']) {
                 const tlm_value = message['TlmValue'] as TlmValue;
                 const listeners = this.on_telem_value.get(tlm_value.uuid);
@@ -126,7 +127,7 @@ export class WebsocketHandle {
             ([uuid_value, connected, enabled, min_sep, live_value]) => {
                 if (connected && enabled && uuid_value && live_value) {
                     this.websocket?.send(
-                        JSON.stringify({
+                        toJsonString({
                             RegisterTlmListener: {
                                 uuid: uuid_value,
                                 minimum_separation_ms: min_sep,
@@ -142,7 +143,7 @@ export class WebsocketHandle {
                     this.on_telem_value.get(uuid_value)?.push(callback_fn);
                     onWatcherCleanup(() => {
                         this.websocket?.send(
-                            JSON.stringify({
+                            toJsonString({
                                 UnregisterTlmListener: {
                                     uuid: uuid_value,
                                 },