Refactor Percentiles/Ranks aggregation builders and factories (#51887) (#54537)

- Consolidates HDR/TDigest factories into a single factory
- Consolidates most HDR/TDigest builder into an abstract builder
- Deprecates method(), compression(), numSigFig() in favor of a new
unified PercentileConfig object
- Disallows setting algo options that don't apply to current algo

The unified config method carries both the method and algo-specific
setting. This provides a mechanism to reject settings that apply
to the wrong algorithm.  For BWC the old methods are retained
but marked as deprecated, and can be removed in future versions.

Co-authored-by: Mark Tozzi <[email protected]>

Co-authored-by: Mark Tozzi <[email protected]>

Author: polyfractal

rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/180_percentiles_tdigest_metric.yml

@@ -262,7 +262,7 @@ setup:
 "Invalid params test":
 
   - do:
-      catch: /\[compression\] must be greater than or equal to 0. Found \[-1.0\] in \[percentiles_int\]/
+      catch: /\[compression\] must be greater than or equal to 0. Found \[-1.0\]/
       search:
         rest_total_hits_as_int: true
         body:
@@ -274,7 +274,7 @@ setup:
                   compression: -1
 
   - do:
-      catch: /\[percents\] must not be empty/
+      catch: bad_request
       search:
         rest_total_hits_as_int: true
         body:

rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/190_percentiles_hdr_metric.yml

@@ -309,7 +309,7 @@ setup:
                   number_of_significant_value_digits: null
 
   - do:
-      catch: /\[percents\] must not be empty/
+      catch: bad_request
       search:
         rest_total_hits_as_int: true
         body: