[ELPA] New package: breadcrumb.el

[João Távora]

Hi all

I'd like to add my package "breadcrumb" to GNU ELPA.

Breadcrumbs are a a "header-line" indication of where you are in a large
project, both in terms of "which file"and "where point is within a
file".  You turn this on with breadcrumb-mode.

Here's a link to the project (which has a screenshot)
https://github.com/joaotavora/breadcrumb

breadcrumb.el uses information derived from existing Emacs libraries
imenu.el and project.el.  It has some points in common with
"which-func.el" but is simpler (and faster).

You don't really have to put "breadcrumbs" in the header-line (I don't)
so the package also come with some lower-level utils so you can plug this
into mode-line-format however you see fit.

I created this package some time ago to answer some common feature
requests for Eglot, but it turned out somewhat more generic and works
nicely with or without Eglot.  I recently cleaned it up a little and
implemented some pendingfeature requests like faces and mouse stuff.

There are a few few TODOs/FIXMEs to help out with, of course.

Here's the patch for elpa.git

diff --git a/elpa-packages b/elpa-packages
index 7bbf35a..cfceb7e 100644
--- a/elpa-packages
+++ b/elpa-packages
@@ -99,6 +99,9 @@
  (bnf-mode             :url "https://github.com/sergeyklay/bnf-mode";)
  (boxy                 :url "https://gitlab.com/tygrdev/boxy";)
  (boxy-headings                :url "https://gitlab.com/tygrdev/boxy-headings";)
+ (breadcrumb           :url "https://github.com/joaotavora/breadcrumb";
+                        :readme "README.md"
+                        :ignored-files ("screenshot.png"))
  (brief                        :url nil)
  (buffer-env           :url "https://github.com/astoff/buffer-env";)
  (buffer-expose                :url "https://github.com/clemera/buffer-expose";)