testing/legume: new aport : A distributed issue tracker base on developer code comments such as TODO and FIXME.

Legume is a distributed issue tracker CLI tool based on developer code comments such as TODO and FIXME. It has no separate metadata files or database and understands several programming languages. It follows in the footsteps of other distributed ticket tracking systems such as lentil, Artemis, b, BugsEverywhere, git-bug, Fossil, sd, ditz, ticgit, and ditrack but in all cases is an improvement in: speed; VCS agnostic; and/or requiring no external database and relying only on code comments. It also in many cases has features such as understanding unified diffs and generating structured output, which allow it to better interoperate with other tooling for e.g. generating changelogs.