Add HTTP content-type for WebP and AVIF #202

Job	Run time
ESP32 (arduino-cli) - Dev	30m 26s
ESP32 (arduino-cli) - Release	30m 2s
ESP32 (pio) - Arduino 2 (esp32dev)	10m 58s
ESP32 (pio) - Specific Envs (ci-arduino-3-latest-asynctcp)	20m 32s
ESP32 (pio) - Arduino 2 (esp32-c3-devkitc-02)	10m 40s
ESP32 (pio) - Arduino 2 (esp32-s3-devkitc-1)	11m 10s
ESP32 (pio) - Specific Envs (ci-arduino-3-no-json)	20m 21s
ESP32 (pio) - Arduino Latest (esp32-s2-saola-1)	19m 29s
ESP32 (pio) - Arduino Latest (esp32dev)	18m 6s
ESP32 (pio) - Arduino Latest (esp32-c3-devkitc-02)	17m 18s
ESP32 (pio) - Arduino Latest (esp32-h2-devkitm-1)	15m 19s
ESP32 (pio) - Arduino 2 (esp32-s2-saola-1)	11m 10s
ESP32 (pio) - Arduino Latest (esp32-c6-devkitc-1)	17m 9s
ESP32 (pio) - Arduino Latest (esp32-s3-devkitc-1)	19m 17s
ESP32 (pio) - Arduino 3 (esp32dev)	22m 26s
ESP32 (pio) - Arduino 3 (esp32-s3-devkitc-1)	22m 41s
ESP32 (pio) - Arduino 3 (esp32-s2-saola-1)	21m 36s
ESP32 (pio) - Arduino 3 (esp32-h2-devkitm-1)	17m 49s
ESP32 (pio) - Arduino 3 (esp32-c6-devkitc-1)	21m 46s
ESP32 (pio) - Arduino 3 (esp32-c3-devkitc-02)	20m 42s
ESP32 (pio) - Arduino 3 (esp32-p4)	20m 39s
	6h 39m 36s

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