Initial stab at the web installer

Signed-off-by: Ricardo Lanziano <[email protected]>

installer/manifest.json

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+{
+  "name": "C3card",
+  "version": "v0.2.0",
+  "builds": [
+    {
+      "chipFamily": "ESP32-C3",
+      "parts": [
+        { "path": "https://github.com/esl/c3card/releases/download/v0.2.0/AtomVM-c3card-esp32c3-master.img", "offset": 0 }
+      ]
+    }
+  ]
+}

markdown/installer.md

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+# Installer
+
+## Installation instructions
+
+### Requirements
+
+- Compatible Browsers: Chrome or Edge on Desktop. Android support is
+  currently not available.
+
+- Required Drivers: Ensure your computer has the necessary drivers
+  installed for ESP devices.
+
+### Step-by-Step Guide
+
+#### Initial checklist
+
+- Use Google Chrome or Microsoft Edge on a desktop computer to access
+  the installation tools.
+
+- Confirm that your `c3card` is connected to your computer. If the
+  device is not recognized, you may need to install additional
+  drivers.
+
+#### Install drivers if needed
+
+- If your `c3card` is not detected, it's likely due to missing
+  drivers. Below are links to download drivers for the most common USB
+  serial chips used in ESP devices:
+
+	- **CP2102 Drivers:** [Download for Windows & Mac](https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers)
+    - **CH342, CH343, CH9102 Drivers:**
+	  - [Download for Windows](https://www.wch.cn/downloads/CH343SER_ZIP.html)
+      - [Download for Mac](https://www.wch.cn/downloads/CH34XSER_MAC_ZIP.html)
+    - **CH340, CH341 Drivers:**
+      - [Download for Windows](https://www.wch.cn/downloads/CH341SER_ZIP.html)
+      - [Download for Mac](https://www.wch.cn/downloads/CH341SER_MAC_ZIP.html)
+
+#### Install the c3card firmware
+
+- Follow the on-screen instructions to load the `c3card` firmware onto
+  your device.
+
+#### Initial provisioning
+
+- Check the display, which should indicate successful initialization
+  and WiFi details for further configuration.
+
+#### Troubleshooting
+
+- **Device Not Recognized:** Ensure that the correct drivers are
+  installed and your browser supports the ESP Web Tools.
+
+- **Serial Port Issues:** If the serial port is not visible, this
+  typically indicates missing USB serial drivers. Refer to the driver
+  installation links provided above.
+
+## Web installer
+
+<div>
+  <script type="module"
+          src="https://unpkg.com/esp-web-tools@10/dist/web/install-button.js?module">
+  </script>
+
+  <esp-web-install-button manifest="/installer/manifest.json">
+    <button slot="activate">Latest version</button>
+  </esp-web-install-button>
+</div>