feat(library/data/bitvec): add bitvec version of tuple.append
feat(library/data/bitvec): add bitvec version of tuple.append

fpvandoorn/lean,johoelzl/lean,dselsam/lean,leanprover/lean,leanprover/lean,digama0/lean,leanprover-community/lean,leanprover-community/lean,leanprover-community/lean,avigad/lean,digama0/lean,leanprover-community/lean,Kha/lean,leanprover-community/lean,leodemoura/lean,rlewis1988/lean,dselsam/lean,avigad/lean,digama0/lean,Kha/lean,Kha/lean,johoelzl/lean,rlewis1988/lean,rlewis1988/lean,leodemoura/lean,avigad/lean,fpvandoorn/lean,fpvandoorn/lean,leodemoura/lean,dselsam/lean,leanprover/lean,dselsam/lean,avigad/lean,leanprover/lean,Kha/lean,digama0/lean,johoelzl/lean,digama0/lean,johoelzl/lean,leodemoura/lean,fpvandoorn/lean,dselsam/lean,digama0/lean,leanprover/lean,leodemoura/lean,Kha/lean,leanprover-community/lean,Kha/lean,fpvandoorn/lean,johoelzl/lean,fpvandoorn/lean,rlewis1988/lean,rlewis1988/lean,rlewis1988/lean,dselsam/lean,leanprover/lean,avigad/lean,johoelzl/lean,avigad/lean,leodemoura/lean