Feature request: Support running selections of roxygen examples in .R files in packages

[EmilHvitfeldt]

Positron Version:

Positron Version: 2024.01.0 (Universal) build 141
Code - OSS Version: 1.85.0
Commit: 443c28b
Date: 2024-01-15T03:11:55.370Z
Electron: 25.9.7
ElectronBuildId: undefined
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Darwin arm64 23.2.0

Steps to reproduce the issue:

1. highlight multiple lines of roxygen examples
2. Enter

Kapture.2024-01-17.at.09.50.56.mp4

What did you expect to happen?

I expected that the lines would evaluate, like they do in RStudio

Reference: #1410

Were there any error messages in the output or Developer Tools console?

Nope

[lionel-]

Also requested in https://github.com/posit-dev/positron-beta/discussions/97