✏️ Add ESP32 information

topics/esp32/index.md

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+---
+aliases: esp32s2, esp32s3, esp32c3
+created_by: Espressif Systems
+display_name: ESP32
+github_url: https://github.com/espressif
+short_description: A feature-rich microcontroller with integrated Wi-Fi and Bluetooth connectivity.
+topic: esp32
+url: https://www.espressif.com/en/products/socs/esp32
+wikipedia_url: https://en.wikipedia.org/wiki/ESP32
+---
+
+ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. It is a successor to the ESP8266 microcontroller. Widely used in hobby projects to large scale industrial applications.