[Proposal] Implement missing actions

[ppasupat]

Proposal

Implement the missing actions.

Motivation

Some actions cannot be performed, preventing some environments from being solved:

• Dragging
• Scroll wheel
• Emit keys (e.g., Ctrl+C)

Pitch

Implement such actions in Selenium.

Alternatives

Most of these actions look doable but could run into issues:

• Getting observation in the middle of a mouse drag might cause issues.
• Scroll wheel needs an arbitrary scroll offset.
• Clipboard might not work or might interfere with the system clipboard (since we're not sandboxing the environment).

There are probably hacks for these issues (e.g., replace clipboard copy/paste with JS calls). The worst case scenario is that they cannot be done, in which case we might need to consider moving away from Selenium.

Checklist

• I have checked that there is no similar issue in the repo (required)