[BUG] The spotless should take care of unified imports ordering

[reta]

Is your feature request related to a problem? Please describe.
Came out of #9082 (review), the spotless does not enforce any formatting on order of imports statements, as such those are very chaotic in the codebase.

Describe the solution you'd like
The spotless should take care of unified imports ordering, the suggested formatting rules are not ideal but they should minimized the amount of files being changed at the same time, bringing consistent order to import statements:

importOrder(
              'de.thetaphi',
              'com.carrotsearch',
              'com.fasterxml',
              'com.avast',
              'com.sun',
              'com.maxmind|com.github|com.networknt|groovy|nebula',
              'org.antlr',
              'software.amazon',
              'com.azure|com.microsoft|com.ibm|com.google|joptsimple|org.apache|org.bouncycastle|org.codehaus|org.opensearch|org.objectweb|org.joda|org.hamcrest|org.openjdk|org.gradle|org.junit',
              'javax',
              'java',
              '',
              '\\#java|\\#org.opensearch|\\#org.hamcrest|\\#'
          )

Describe alternatives you've considered
Keep the chaotic imports

Additional context

• benchmarks/
• buildSrc/
• client/
• distribution/
• libs/
• modules/
• plugins/
• qa/
• server/
• test/

[andrross]

@reta Did you change the behavior of spotless to enforce import ordering? I see all the PRs that are reordering imports but didn't find a change to the spotless task itself.

Edit: Just worked this out for myself but obviously you can't enable enforcement until you fix all existing violations :)