Starting on asset upload.

[alexanderson1993]

Description

Replaced the WebSocket netsend API with HTTP,
since it makes it easier to include the uploaded files
inline.

Todo: Create a utility function for moving files
wherever you want, most likely placing them inside the
assets folder. The good news is that the input function
is able to decide whatever they want to do with the file,
which is nice.

Related Issue

Refs #62

How Has This Been Tested?

Types of changes

• Docs Change (changes were only made to documentation)
• Refactor (non-breaking change which improves code)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to
  change)

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the built-in project documentation.
• My change adds dependencies to this project.
• I have added tests to cover my changes.
• All new and existing tests passed.