ESP32 HTTPClient + Weather API (with SSD1306 OLED Display)

In this project, we use the ESP32 to make a REST API call to a weather API (wttr.in) over the internet using `HTTPClient.h`. Unlike the previous I2C LCD version, we’re using an SSD1306 OLED (128×64) display here—which allows for large fonts, vector icons, and rich visual presentation on a single screen. Seven different vector icons for weather conditions (sunny, partly cloudy, cloudy, rainy, snowy, stormy, foggy) are drawn at runtime (no bitmap files required). The temperature is displayed in th