Make install check aware of alternative package managers

[matsl]

What

Make install check aware of alternative package managers and avoid doing
packet-install for those. Adding a defcustom so users can choose to get an
automated install if using the standard package.el.

Why

There are multiple package managers so we can't assume users use
package.el. If it is not used then using it to install a package would likely
be an error an could damage a users setup or at least not be what the user
expects.

Supporting different package managers for an automatic install is beyond
where we want to go.

Note

The idea is to use hypb:ensure-dependency in all places where we today to packet-install-p. That would be

$ grep package-installed-p *.el
hsys-consult.el:  (unless (package-installed-p 'consult)
hsys-consult.el:  (unless (package-installed-p 'org-roam)
hui-treemacs.el:    (and (package-installed-p 'treemacs)
hypb.el:  (unless (package-installed-p 'interaction-log)
hypb.el:           (package-installed-p package))
hyrolo.el:    (unless (package-installed-p 'markdown-mode)
hyrolo.el:  (unless (package-installed-p 'markdown-mode)

Before implementing that could you, @rswgnu, take a look at what you think of
using this idea? If that makes sense I can complete this Draft.

[rswgnu]

You are on the right track. I would finish it off and add quelpa.

[rswgnu]

Add quelpa too.

[matsl]

I read up on quelpa and it seems it is based on top of package.el. Users can mix installing using quelpa and package.el directly. So it is not clear a user would prefer to install the packages we dynamically depend on using quelpa. So we can let package.el handle a potential install for quelpa users. It will not cause any big problem for them if I understand things correctly.