dev: initial work on judge0 implementation

src/backend/src/modules/puterexec/Judge0Client.js

@@ -0,0 +1,32 @@
+const axios = require('axios');
+
+class Judge0Client {
+    constructor (options = {}) {
+        Object.assign(this, {
+            baseURL: 'https://judge0-ce.p.sulu.sh',
+            token: '',
+        }, options);
+    }
+
+    async about () {
+        return await this.get_('/about');
+    }
+
+    async get_ (path) {
+        if ( ! path.startsWith('/') ) {
+            path = `/${path}`;
+        }
+        console.log('how is this url invalid??', `${this.baseURL}${path}`);
+        const resp = await axios.request({
+            method: 'GET',
+            url: `${this.baseURL}${path}`,
+            headers: {
+                Authorization: `Bearer ${this.token}`,
+            },
+        });
+
+        return resp.data;
+    }
+}
+
+module.exports = { Judge0Client };

src/backend/src/modules/puterexec/Judge0Service.js

@@ -0,0 +1,34 @@
+const BaseService = require("../../services/BaseService");
+const { Judge0Client } = require("./Judge0Client");
+
+class Judge0Service extends BaseService {
+    _construct () {
+        this.about_ = {};
+    }
+
+    static IMPLEMENTS = {
+        ['puter-exec']: {
+            async about () {
+                return this.about ?? (this.about = await this.client.about());
+            },
+            async supported () {
+                return require('./languages/languages');
+            },
+            async exec ({ runtime, code }) {
+                return await this.exec_(runtime, code);
+            }
+        }
+    }
+
+    async _init () {
+        this.client = new Judge0Client({
+            token: this.config.token,
+        });
+    }
+
+    async exec_ (runtime, code) {
+        //
+    }
+}
+
+module.exports = Judge0Service;