Add Octoprint platform and template

[Azelphur]

[x] I'm submitting a template app

• I have added a .ini file to DashMachine with the same name used for [App Name] in the .ini file (e.g. 'App Name.ini')
• My .ini has the exact format as the others in the folder, only changing the name, icon location, and description.
• I used the official description and name for the app, found on their repository/website.
• I chose an icon (.png file) sized over 64px, with a transparent background, square aspect ratio, preferably the icon only version (not icon w/ text) of the app's icon.
• I understand that the icon will be resized to 64px x 64px and have verified that it looks good at that size.
• I have added the icon to static/images/apps with the correct name matching what's in the .ini.
• I tested it to make sure it looks good in the interface

[x] I'm submitting a platform

• I looked at the other platform examples and followed a very similar methodology.
• I added a docstring at the top of my platform file that is formatted exactly like rest.py
• I added sample code to any template app that this platform works for, look at deluge.ini in /template_apps/ for an example
• I have thoroughly tested this platform and it works
• I am committed to updating this platform if something breaks it in the future