[WebProfilerBundle] Add a link of the current rendered template on the twig tab of the web debug toolbar

[benjaminequation]

[WebProfilerBundle] Add link to the web debug toolbar twig tab.

Q	A
Branch?	6.3
Bug fix?	no
New feature?	yes
Deprecations?	no
Tickets
License	MIT
Doc PR

I added a link on the twig tab of the debug toolbar.
This link refers the last and current rendered template.
It improves the developer experience and avoid using CMD + Click (or CTRL + Click) on the twig tab to show the template.
It make the debug easier, especially if you set up IDE navigation.

Hope it'll help other developers.

[carsonbot]

Hey!

I see that this is your first PR. That is great! Welcome!

Symfony has a contribution guide which I suggest you to read.

In short:

• Always add tests
• Keep backward compatibility (see https://symfony.com/bc).
• Bug fixes must be submitted against the lowest maintained branch where they apply (see https://symfony.com/releases)
• Features and deprecations must be submitted against the 6.3 branch.

Review the GitHub status checks of your pull request and try to solve the reported issues. If some tests are failing, try to see if they are failing because of this change.

When two Symfony core team members approve this change, it will be merged and you will become an official Symfony contributor!
If this PR is merged in a lower version branch, it will be merged up to all maintained branches within a few days.

I am going to sit back now and wait for the reviews.

Cheers!

Carsonbot

[benjaminequation]

I added a condition to check if there is at least a rendered template.

[javiereguiluz]

I'm closing this because I think it's the same idea that was merged in #49887 and released as part of 6.3.

If I'm wrong, we'll reopen this.

In any case, thanks a lot @benjaminequation for proposing this nice feature!