add extend_dictionary
in dictionary builder for improved performance
#6875
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Which issue does this PR close?
No issue
Rationale for this change
This is done to improve the performance when wanting to add already build dictionary to existing builder by taking advantage of the fact that we don't need to check the values for each key
What changes are included in this PR?
added
extend_dictionary
forPrimitiveDictionaryBuilder
and forGenericByteDictionaryBuilder
Are there any user-facing changes?
yes, these are public methods