[craftedv2beta] Use org-indent-mode in crafted-org

[jvdydev]

Noticed that org-indent-mode is not activated by default (part of org).

I personally think it helps a lot with making org more naturally readable,
without having to micro-manage indentation oneself.

Activation could be in crafted-org-config.el:

(add-hook 'org-mode-hook #'org-indent-mode)

[Jeff Bowman]

Not opposed. PR?