Create bug-bbq-involvement.md
Create bug-bbq-involvement.md

add F's post

Former-commit-id: 0a80b1c3f005c37087bcf7fe5b0c39524f838d63 [formerly 512ddf4a07625134cf58fba4a538f9374e053fa5]
Former-commit-id: 0a168c9109173b75bda0187f9cfc6df128058ff9
LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io