Add support for GfM alerts

[idleberg]

This PR adds support for GfM alerts, closing #1509. The styling is subjective, of course, but I tried to make it align with the current design as much as possible.

[netomi]

please sign the eca, more details can be found here: https://api.eclipse.org/git/eca/status/gh/eclipse/openvsx/1535

[idleberg]

Maybe I'm simply impatient. I signed the ECA, got a success message and was redirected here. The status of the ECA workflow is unchanged. When I click your link above, it appears that it's not signed (I've tried several times since, again, maybe I should be more patient?)

[netomi]

revalidation is usually a manual process, in the details view there is a Revalidate button. After you have signed the ECA the validation shall succeed, which did in your case.

[netomi]

tested the PR, looks good:

[netomi]

the version of markdown-it that you bumped to has received a CVE: markdown-it/markdown-it#1122

However, after further analysis, this CVE is probably not valid, and we should not be affected at at all we do not use the highlight fuctionality.

[netomi]

I have amended the PR with a changelog entry (which we do now explicitly for the webui components as they are also released to npm and we would like to know what changes went into the package) and added the icons as well to the alert box to make it a bit nicer:

[netomi]

May I ask you to also look into this PR #1399 to change from webpack to vite for improved developer experience to gather feedback if this would be a useful change?

[idleberg]

May I ask you to also look into this PR #1399 to change from webpack to vite for improved developer experience to gather feedback if this would be a useful change?

IMHO, there's a massive benefit in switching to Vite, the API is much simpler and all the tooling is much faster. I also love the integration with testing tools such as Vitests.

I left some comments in the PR, but nothing major.

[netomi]

if you are fine with my changes I can go ahead and merge the PR. Thanks a lot anyways for this contribution.

[idleberg]

Love the icons. PR LGTM.