Re-configure taskwarrior setup on-the-fly.

A suggestion by @linuxcaffe was made to expand the installer to a reconfiguration service/interface. For example, linuxcaffe may share a file, on Git or Instagram whatever, that specifies its setup in a format that is supported by this installer:
- taskwarrior & timewarrior
- These 7 hook scripts
- sorting on due date
- max 50 tasks
- some colour settings
- etc. etc.
and someone could get the link or scan the QR code to get a taste of the setup that linuxcaffe uses. (Because the reconfiguration service of this installer would change the configuration of the user towards that of linuxcaffe on the fly).

Advice was given regarding the folder structure that might be convenient for such a service.

For enabling and disabling things in the`.taskrc` file, it may be useful to use nested-includes. For example, the `.taskrc` could perhaps contain all the basic taskwarrior settings, and it could have a line `include ~/.task/install/install.config`. Then that `install.config` file I could have some settings AND a line `include ~/.task/install/example-hook.config` which in turn would then enable-/disable hooks (and so-on).