Register obsstudio URL handler for windows

[dgeibi]

Description

Register OBS to obsstudio://

Motivation and Context

Make it possible to open OBS from websites.

How Has This Been Tested?

Make nsis installers and install OBS. Create a html file with <a href="obsstudio://">Open OBS</a> and Click "Open OBS"

Types of changes

New feature (non-breaking change which adds functionality)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[henke37]

Protocol handlers have a bit of a history of excessive trust. Have you considered abuse potential? For example, does this offer the ability to pass command line arguments that aren't internet safe?

[WizardCM]

It may be worth reading the RFC for a URI handler obsproject/rfcs#10

[WizardCM]

Closing this for now as there still seems to be some discussion to be had on the RFC.