Use Composer Suggestions - add main addons and tools as suggestions in composer.json

[tabacitu]

When doing a composer install it should say something like this (see last line):

It's a small line, that not many people read. But if you do composer suggest like it recommends, you'd get an output like this:

Which is pretty cool. This PR should add our NOT REQUIRED, but NICE-TO-HAVE packages to this output. So that people who run this also learn a little bit more about the packages we tell people to install across the Backpack docs.

I think that's a good place as any to communicate to people some of the addons we have, that they might want to use. Now, we do have to draw the line somewhere... so:

• I don't think we'll ever include 3rd party add-ons here; 1st party (backpack/digitallyhappy), sure; 2nd party (backpack veterans)... maybe; but 3rd party... probably not smart;
• I didn't include addons like NewsCRUD, BackupManager, etc because... while useful, those packages only cover a very particular use case;
• the packages that I did include here are mentioned throughout the docs, which might be a little too hidden; they're mentioned inside that particular feature; this would make them a little more visible, point people to that particular feature we do offer, but as an optional addon;

I don't know whether this should be merged. Not sure it adds much value, or if anybody actually uses composer suggest. Then again... it wouldn't hurt... I don't know...

[scrutinizer-notifier]

The inspection completed: No new issues

[DoDSoftware]

I dig it and certainly couldn't hurt

[promatik]

It's a nice to have, maybe later we can keep the list updated with the Top Rated addons.