Add footprinter for BGA100 (12x12mm, 10x10 grid, 1.0mm pitch)

[homie-gg[bot]]

This might be a duplicate of: bga100_w12_h12_grid10x10_p1.0mm: BGA with 100 pins, 12mm width, 12mm height, 10x10 ball grid, and 1.0mm pitch..

[homie-gg[bot]]

Here are some pull requests that might be helpful reference for this task:

• Implement Bga component