Add WebServer_ESP32_SC_W6100 library (#2350)

#### Releases v1.2.1

1. Initial coding to support `ESP32_S2/S3/C3`-based boards using `LwIP W6100 Ethernet`. Sync with [WebServer_ESP32_SC_W5500 v1.2.1](https://github.com/khoih-prog/WebServer_ESP32_SC_W5500)
2. Use `allman astyle`

Author: khoih-prog

repositories.txt

@@ -5507,3 +5507,4 @@ https://github.com/kermite-org/KermiteCore_Arduino
 https://github.com/dvarrel/BMP280
 https://github.com/chandrawi/U8x_Laser_Distance
 https://github.com/khoih-prog/WebServer_ESP32_W6100
+https://github.com/khoih-prog/WebServer_ESP32_SC_W6100