HBASE-27977 Add spotless plugin to hbase-operator-tools

[NihalJain]

• Added the plugin to pom.xml
• Added the files required by the plugin ( copying them from hbase repo)

[NihalJain]

Commit 1: Added plug-in along with required files
Commit 2:
Ran mvn spotless:apply and staged all file changes. We can decide if we want to do this as a separate change to keep things clean.

Let me know what do you all think of this change.

CC: @duo @ndimiduk @wchevreuil @petersomogyi

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 38s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+0 🆗	markdownlint	0m 0s	markdownlint was not available.
+0 🆗	shelldocs	0m 0s	Shelldocs was not available.
+0 🆗	spotbugs	0m 0s	spotbugs executables are not available.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s	The patch appears to include 16 new or modified test files.
		_ master Compile Tests _
+0 🆗	mvndep	0m 32s	Maven dependency ordering for branch
+1 💚	mvninstall	0m 29s	master passed
+1 💚	compile	0m 38s	master passed
+1 💚	checkstyle	0m 18s	master passed
+1 💚	javadoc	0m 25s	master passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 4s	Maven dependency ordering for patch
+1 💚	mvninstall	0m 52s	the patch passed
+1 💚	compile	0m 38s	the patch passed
+1 💚	javac	0m 38s	the patch passed
+1 💚	checkstyle	0m 16s	the patch passed
+1 💚	shellcheck	0m 1s	There were no new shellcheck issues.
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	xml	0m 6s	The patch has no ill-formed XML file.
+1 💚	javadoc	0m 24s	the patch passed
		_ Other Tests _
+1 💚	unit	0m 6s	hbase-table-reporter in the patch passed.
+1 💚	unit	4m 31s	hbase-hbck2 in the patch passed.
+1 💚	unit	1m 26s	hbase-tools in the patch passed.
+1 💚	unit	0m 4s	hbase-operator-tools-assembly in the patch passed.
+1 💚	unit	5m 55s	root in the patch passed.
+1 💚	asflicense	0m 22s	The patch does not generate ASF License warnings.
		19m 26s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hbase.apache.org/job/HBase-Operator-Tools-PreCommit/job/PR-132/1/artifact/yetus-precommit-check/output/Dockerfile
GITHUB PR	#132
Optional Tests	dupname asflicense markdownlint xml shellcheck shelldocs javac javadoc unit compile spotbugs findbugs checkstyle
uname	Linux ed2e324f02de 5.4.0-1103-aws #111~18.04.1-Ubuntu SMP Tue May 23 20:04:10 UTC 2023 x86_64 GNU/Linux
Build tool	maven
git revision	master / efa1916
Default Java	Oracle Corporation-1.8.0_342-b07
Test Results	https://ci-hbase.apache.org/job/HBase-Operator-Tools-PreCommit/job/PR-132/1/testReport/
Max. process+thread count	1273 (vs. ulimit of 5000)
modules	C: hbase-table-reporter hbase-hbck2 hbase-tools hbase-operator-tools-assembly . U: .
Console output	https://ci-hbase.apache.org/job/HBase-Operator-Tools-PreCommit/job/PR-132/1/console
versions	git=2.30.2 maven=3.8.6 shellcheck=0.7.1
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[petersomogyi]

I'm fine with the squash of these 2 commits.

[NihalJain]

Thank you @petersomogyi for reviewing. Will wait and merge this tomorrow, in case no objections.

[NihalJain]

Thanks @petersomogyi, merged to code base!