Suggested: EuPI sample app proposal about `eupi-presentor`

[designe]

Discussed in https://github.com/orgs/euphony-io/discussions/219

^{Originally posted by phj0407 September 2, 2022}
Hello, I and @nodobi are planning to make EuPI sample app, 'eupi-presentor' , and want repository for it! We will use kotlin and compose.

App

It will have two features.

PPT Loader

• load and show PPT
• We will using pptviewer-android library (https://github.com/itsrts/pptviewer-android)

PPT controler

• send & receive EuPI for PPT page control