BATON ROUGE — Raising Cane's founder and CEO Todd Graves is donating $75,000 to keep the Big Buddy Program afloat in Baton Rouge. According to Cane's, Graves, a former mentor in the program, donated to cover an urgent funding shortfall at Big Buddy.Graves' donation will help pay the nonprofit's staff as they continue mentoring, after-school and enrichment programs for local children and families. Graves previously committed to donating $10,000 a…