Add docker/lint.sh, for running dockerized lint scripts locally (#6333)

Add docker/lint.sh, for running dockerized lint scripts locally (#6333)

* Add -i option to docker/bash.sh

 * Allows scripts to invoke dockerized commands interactively, for
   better Ctrl+C.

* Add docker/lint.sh to run lint step locally in the docker VM.

 * This allows developers to run lint using the official versions of
   the lint tools without needing to lookup the docker image name.
 * Move all lint scripts to tests/lint/
 * Point Makefile to those new scripts.
 * Update apache rat script to filter untracked/gitignore'd files when
   run with `docker/lint.sh`.

* fix bash_source[0]

* explicitly set the author for CI

* try environment variable override

* try config option

* remove =traditional from ignored option to increase git compat

* address comments, fix behavior under git worktrees

* address cppdocs comments

* address lint.sh comments

* address zhi comments, update pull_request rst