[TRACKING ISSUE] [API-1320] Introduce various updates to Compact serialization implementation

[hz-devops-test]

The tracking issue for the Java side PR.

See hazelcast/hazelcast#21734 for details.

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This is the compound PR for the tasks listed in JIRA task API-1320.

It contains the following changes

• Schema class now holds the fields in a HashMap instead of TreeMap
  for faster lookups
• Various JavaDoc fixes for some classes
• Removing non-reachable dead codes around RabinFingerprint,
  DefaultCompactWriter, and CompactInternalGenericRecord
• Mechanism to prevent duplicate field names in the Compact serializers
• Check for making sure that the Compact serializers registered
  would not override the default serializers, unless explicitly
  set by the user to do so.