Added UriInfo#getMatchedResourceTemplate method

[jansupol]

Implements #1191

There can be a discussion of the actual method name, as the proposed name was getResourceTemplate, but getMatchedResourceTemplate is more aligned with other matched methods.

Also, the return type can be in the form of a list, but the discussion was to return a string

[jim-krueger]

Should there be TCK additions to ee.jakarta.tck.ws.rs.ee.rs.core.uriinfo.URIInfoTest?

[jansupol]

Should there be TCK additions to ee.jakarta.tck.ws.rs.ee.rs.core.uriinfo.URIInfoTest?

Definitely. I plan to add those if accepted

[jim-krueger]

Would be nice to get this into 4.0. Not sure if there is enough runway.

[jansupol]

Added the TCK tests

[jim-krueger]

With the TCK I am in favor of adding this to the Jakarta Rest 4.0 content. Can we get a quick vote on this?

@ivargrimstad Can we still add this relatively minor, but nice to have, improvement to 4.0 (assuming it passes a vote)?

[jansupol]

An alternative with returning the List of templates #1245

[jansupol]

I slightly prefer the #1245 over this one

[jamezp]

In talking with some of the OTel folks, they seemed to prefer the string return type so they don't have to combine the list to a string.

[jim-krueger]

Yes, this was run past Andrew, the originator of the issue and he concurred. So this is the PR that should be merged.