This adds support for interacting with the new apt 1.6+ hooks.
It implements the `org.debian.apt.hooks.install.fail` hook and
will suggest a snap if there is one available with the given
name.
E.g.:
```
Reading package lists... Done
Building dependency tree
Reading state information... Done
No apt package "aws-cli", but there is a snap with that name.
Try "snap install aws-cli"
E: Unable to locate package aws-cli
```
