Add EspHttpServer repository link (#7260)

Author: tanakamasayuki

repositories.txt

@@ -7052,6 +7052,7 @@ https://github.com/tanakamasayuki/ESP32SerialCtl
 https://github.com/tanakamasayuki/EmbedFS
 https://github.com/tanakamasayuki/EspHelper
 https://github.com/tanakamasayuki/AssocTree
+https://github.com/tanakamasayuki/EspHttpServer
 https://github.com/TanPitch/ButtonKing
 https://github.com/TaraHoleInIt/Subpixie
 https://github.com/tasos12/ev3-arduino