Documentation: Add information about packaging and distribution

[hugodahl]

Is your feature request related to a problem? Please describe.
The documentation does not currently make any mention about packaging or distributing the application once development is at a "big D done" stage. The only mention of anything remotely related is the process which copies the assets to the Plugins directory.

Describe the solution you'd like
There are several different ways in which this can be approached. The least of these which should be included is information (and link to the docs) about the actual packaging process.

Additionally, providing a sample script, and perhaps a sample CI file (Azure DevOps, GitHub Actions, CircleCI, AppVeyor, etc) as a best practice would go a long way to making this final step easier, especially since this shouldn't be an action which is performed as frequently.

Describe alternatives you've considered
n/a

Additional context
Stream Deck SDK links to the documentation about:

• Exporting the plugin
• Distribution through the store
• Distribution through other means
  • An example might be in the developer's GitHub repo, under the Releases section

Is there one or more bugs reported related to this suggestion? If so, mention them below
n/a