Positron: Add setting to prefer Positron's bundled Quarto

[jmcphers]

Currently, the VS Code/Positron extension treats Positron's bundled copy of Quarto as one of many possible Quartos. Several users have mentioned that they'd like a setting that causes the extension to not only use but prefer this Quarto over others.

When run in Positron, I'm finding it useful to set my Quarto path at a project-level to use Positron's bundled Quarto. It forces me to use a recent stable Quarto without me worrying about what I've currently got installed on my PATH (usually dev or prerelease)

This is where we find Positron's Quarto:

quarto/apps/vscode/src/main.ts

Lines 62 to 63 in b45f12e

	// Look for quarto in the app root; this is where Positron installs it
	[path.join(vscode.env.appRoot, 'quarto', 'bin')],

The proposed setting would cause this Quarto to take precedence over others, even if they have a later version.

[cscheid]

How does Positron communicate this kind of setting to users? If they requested it, I trust that they know what they're asking for, but I'm wondering what you think about a scenario when users:

• turn this setting on,
• two months later, forget about it
• three months later, install a new version of Quarto and be very confused when they don't see the new feature or bugfix from that version they just installed.

[cwickham]

As a user who would like this, I've trained myself to look in the status bar for the Quarto version in the current workspace:

Hovering over this gives the full path (but was impossible to screenshot), which might alert a forgetful user...

[juliasilge]

Support for this new quarto.useBundledQuartoInPositron is now merged into main, and will become available to users the next time we do a release.