SOLR-8138: Simple UI for issuing SQL queries

[epugh]

This code was mostly written by Michael Suzuki in PR #180, i just tweaked it to load in Solr 9, and updated the version of ui-grid to the 4.10 version.

Description

Add a simple page to Solr Admin for doing SQL queries.

Solution

Delegates to the qt=sql handler and runs the query. Displays results in basic table.

This UI shows how easy it is to write a SQL query that Solr doesn't like ;-(. However, it's much easier to use than using Curl. And may encourage more use of this powerful feature.

Tests

Please describe the tests you've developed or run to confirm this patch implements the feature or solves the problem.

Checklist

Please review the following and check all that apply:

• [X ] I have reviewed the guidelines for How to Contribute and my code conforms to the standards described there to the best of my ability.
• [ X] I have created a Jira issue and added the issue ID to my pull request title.
• [ X] I have given Solr maintainers access to contribute to my PR branch. (optional but recommended)
• [X ] I have developed this patch against the master branch.
• [ X] I have run ./gradlew check.
• I have added tests for my changes.
• [X ] I have added documentation for the Ref Guide (for Solr changes only).

[epugh]

@michaelsuzukisagi I'd love your review.

[epugh]

I think I'm done with this PR! I'd love a review and then I'll commit it. I could see backporting it to 8.x as well.

[janhoy]

LGTM. Do we need to add a short credit to ui-grid in LICENSE.txt? I'm confused about when to use NOTICE and LICENSE, but I think it should go in one of them?

[epugh]

are you referring to the /solr/licenses/ directory? A /solr/licenses/ui-grid-LICENSE.txt and /solr/licenses/ui-grid-NOTICE.txt?

Be nice to add this to the dev docs!

[epugh]

also, I don't see any licenses for the JS libraries....

[epugh]

How do we get a clarificaiton on this?

[janhoy]

So I think you add a few lines at bottom of solr/LICENSE.txt, you already see the jquery part there.
I have been adding some sections to solr/NOTICE.txt earlier, but I think some of those really belong in LICENSE.txt instead, since only some projects and licenses require use of NOTICE. So a cleanup is needed too...

[epugh]

ahh! I didn't know abouit that!