[SPARK-13930] [SQL] Apply fast serialization on collect limit operator

## What changes were proposed in this pull request?

JIRA: https://issues.apache.org/jira/browse/SPARK-13930

Recently the fast serialization has been introduced to collecting DataFrame/Dataset (#11664). The same technology can be used on collect limit operator too.

## How was this patch tested?

Add a benchmark for collect limit to `BenchmarkWholeStageCodegen`.

Without this patch:

    model name      : Westmere E56xx/L56xx/X56xx (Nehalem-C)
    collect limit:                      Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
    -------------------------------------------------------------------------------------------
    collect limit 1 million                  3413 / 3768          0.3        3255.0       1.0X
    collect limit 2 millions                9728 / 10440          0.1        9277.3       0.4X

With this patch:

    model name      : Westmere E56xx/L56xx/X56xx (Nehalem-C)
    collect limit:                      Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
    -------------------------------------------------------------------------------------------
    collect limit 1 million                   833 / 1284          1.3         794.4       1.0X
    collect limit 2 millions                 3348 / 4005          0.3        3193.3       0.2X

Author: Liang-Chi Hsieh <simonh@tw.ibm.com>

Closes #11759 from viirya/execute-take.