Add BGA-77_9.0x15.0mm_Layout7x11_P1.27mm_Ball0.63mm

Add Analog BGA Package 77-Lead 15.00mm × 9.00mm × 2.42mm. Layout 7x11, pich 1.27mm, 0.63mm ball.

Datasheet: https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-bga/05081964_B_bga77.pdf