Introducing new ISM Action to create rollups

[thalurur]

Issue #, if available:
N/A

Description of changes:
A new ISM Action called RollupAction is introduced to create single run rollups

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #371 (2ac74f5) into master (9207224) will increase coverage by 0.01%.
The diff coverage is 77.10%.

@@             Coverage Diff              @@
##             master     #371      +/-   ##
============================================
+ Coverage     76.44%   76.45%   +0.01%     
- Complexity     1391     1453      +62     
============================================
  Files           183      188       +5     
  Lines          7022     7314     +292     
  Branches       1143     1186      +43     
============================================
+ Hits           5368     5592     +224     
- Misses         1030     1078      +48     
- Partials        624      644      +20     

Impacted Files	Coverage Δ	Complexity Δ
...nagement/step/rollup/AttemptCreateRollupJobStep.kt	45.76% <45.76%> (ø)	5.00 <5.00> (?)
.../indexstatemanagement/model/action/ActionConfig.kt	84.61% <50.00%> (-0.72%)	9.00 <0.00> (ø)
...gement/indexstatemanagement/action/RollupAction.kt	61.53% <61.53%> (ø)	5.00 <5.00> (?)
...statemanagement/model/action/RollupActionConfig.kt	67.85% <67.85%> (ø)	5.00 <5.00> (?)
...agement/step/rollup/WaitForRollupCompletionStep.kt	81.25% <81.25%> (ø)	14.00 <14.00> (?)
...icsearch/indexmanagement/rollup/model/ISMRollup.kt	93.57% <93.57%> (ø)	29.00 <29.00> (?)
...ent/model/managedindexmetadata/ActionProperties.kt	97.36% <95.00%> (+1.91%)	11.00 <3.00> (+4.00)
...nt/indexstatemanagement/model/destination/Chime.kt	40.90% <0.00%> (-13.64%)	2.00% <0.00%> (-2.00%)
...adata/TransportUpdateManagedIndexMetaDataAction.kt	85.18% <0.00%> (-3.71%)	9.00% <0.00%> (-1.00%)
...agement/indexstatemanagement/ManagedIndexRunner.kt	55.04% <0.00%> (-0.62%)	41.00% <0.00%> (ø%)
... and 9 more

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