Add a glissando keyboard shortcut

Your idea

I think that there should be a dedicated shortcut for inserting a glissando between the currently-selected note and the next note in the score, similar to how the slur and tie shortcuts work.

Problem to be solved

Glissandi are very common in compositions for certain instruments, but there isn't currently a fast way to insert them. A keybind option in Preferences > Shortcuts would be very useful for composers looking to quickly iterate in a score.

Note: I know this request could be expanded into adding shortcuts for inserting any palette item, but I'm looking to keep it simple and self-contained as a quick and easy QOL change.

Checklist

• This request follows the guidelines for reporting issues
• I have verified that this feature request has not been logged before, by searching the issue tracker for similar requests

No files or tests are named. Start by tracing the existing slur and tie keyboard shortcuts and the Preferences > Shortcuts entry points, then inspect how a selected note and the following note are connected. Done means a dedicated configurable shortcut inserts a glissando between those notes and the behavior is covered by the relevant existing tests.