Activate via context menu

[manandbytes]

It would be convenient to have Org Capture context menu so that user would:

• select text to capture
• press right mouse button
• and the action is right here, under the cursor.

[sprig]

Sounds good! PR would be welcome!

[abo-abo]

Just being able to capture a link from the context menu would be really cool, especially for Youtube playlists.