chore: update GitHub issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 'bug'
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+
+Please fill the following code example:
+
+Engine.IO server version: `x.y.z`
+
+*Server*
+
+```js
+const engine = require("engine.io");
+const server = engine.listen(3000, {});
+
+server.on("connection", (socket) => {
+  console.log("connection");
+
+  socket.on("message", (data) => {
+    console.log("data", data);
+  });
+
+  socket.on("close", () => {
+    console.log("close");
+  });
+});
+```
+
+Engine.IO client version: `x.y.z`
+
+*Client*
+
+```js
+const socket = require("engine.io-client")("ws://localhost:3000");
+
+socket.on("open", () => {
+  console.log("open");
+
+  socket.on("message", (data) => {
+    console.log("data", data);
+  });
+
+  socket.on("close", () => {
+    console.log("close");
+  });
+});
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Platform:**
+ - Device: [e.g. Samsung S8]
+ - OS: [e.g. Android 9.2]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Ask a Question
+    url: https://github.com/socketio/socket.io/discussions/new?category=q-a
+    about: Ask the community for help

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: 'enhancement'
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.