[ImgBot] Optimize images

*Total -- 1,625.12kb -> 1,533.45kb (5.64%)

/LCD1.jpg -- 140.65kb -> 124.25kb (11.66%)
/joystick.jpg -- 35.40kb -> 32.32kb (8.71%)
/LCD2.jpg -- 621.25kb -> 584.71kb (5.88%)
/LCDback.jpg -- 355.12kb -> 337.65kb (4.92%)
/YwRobotLCD-CU-450.jpg -- 56.58kb -> 53.82kb (4.88%)
/I2C_connector.jpg -- 357.75kb -> 342.40kb (4.29%)
/4x20-LCD-panel.jpg -- 58.37kb -> 58.31kb (0.1%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp