feat: add `header-tag` and `footer-tag` props to all components with header and footer (closes #6321)#6375

jacobmllr95 merged 2 commits intodevbootstrap-vue/bootstrap-vue:devfrom

feat-add-props-for-header-and-footer-tagsbootstrap-vue/bootstrap-vue:feat-add-props-for-header-and-footer-tagsCopy head branch name to clipboard