Bug#1072787: elpa-debian-el: support filing RFS bugs

[Xiyue Deng <manphiz@gmail.com>]

Package: elpa-debian-el
Version: 37.12
Severity: wishlist

It would be useful to support filing RFS bugs through debian-bug.
Nowadays people mostly use mentors.d.n to host packages waiting for
sponsors, which also provide an RFS template for filing such bugs,
therefore the most straightforward way to support it is to take
advantage of the `mailto' link generated on that page instead of using a
custom built template which may become out-of-sync with the RFS
template.

I am experimenting an implementation and will push to team repo once
proven to be stable.

-- System Information:
Debian Release: 12.5
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-21-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages elpa-debian-el depends on:
ii  bzip2           1.0.8-5+b1
ii  dh-elpa-helper  2.1.2~bpo12+0manphiz1
ii  emacsen-common  3.0.5
ii  reportbug       12.0.0
ii  xz-utils        5.4.1-0.2
ii  zstd            1.5.4+dfsg2-5

Versions of packages elpa-debian-el recommends:
ii  emacs              1:29.3+1-3~bpo12+1
ii  emacs-gtk [emacs]  1:29.3+1-3~bpo12+1
ii  wget               1.21.3-1+b2

elpa-debian-el suggests no packages.

-- no debconf information