[DT-921] Add spotless formatting to code base

[pshapiro4broad]

Addresses

https://broadworkbench.atlassian.net/browse/DT-921

Summary

Add spotless to the maven configuration. See the spotless maven plugin docs.

• when running locally, mvn compile will run spotless:apply
• when running in CI (GitHub workflows), mvn verify (and therefore mvn test) will run spotless:check

This also removes the IntelliJ code format config files, and updates some GitHub workflows to use JDK 21, since that's the version our maven config specifies.

This change only enables spotless, no source reformatting has been applied yet. When we're ready to apply it, check out this branch and run mvn spotless:apply locally and push the changes up. Once the changes have been merged up, get the git hash and add it to a https://github.com/DataBiosphere/jade-data-repo/blob/develop/.git-blame-ignore-revs file.

---

Have you read CONTRIBUTING.md lately? If not, do that first.

• Label PR with a Jira ticket number and include a link to the ticket
• Label PR with a security risk modifier [no, low, medium, high]
• PR describes scope of changes
• Get a minimum of one thumbs worth of review, preferably two if enough team members are available
• Get PO sign-off for all non-trivial UI or workflow changes
• Verify all tests go green
• Test this change deployed correctly and works on dev environment after deployment

[rushtong]

This looks good to me - running this I do see a ton of changes, so it will be a rather large change once we tackle the actual cleanup. I also think semgrep will complain due to the number of query reformats.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[rushtong]

👍🏽

[pshapiro4broad]

This PR is incomplete, you still need to

• run mvn compile locally and commit the 400+ files that are reformatted
• update the test workflow to run mvn spotless:check so incorrectly formatted code merged up

[rushtong]

👍🏽

[sonarqubecloud]

Quality Gate passed

Issues
152 New issues
0 Accepted issues

Measures
0 Security Hotspots
68.3% Coverage on New Code
0.1% Duplication on New Code

See analysis details on SonarQube Cloud