ORC-1730: [C++] Add finishEncode support for the encoder #4035

Job	Run time
Javadoc generation	1m 38s
C++ format check	9m 5s
Java 17 and clang++ on ubuntu-20.04	18m 39s
Docker debian11	20m 22s
Java 21 and clang++ on ubuntu-20.04	18m 0s
License Check	31s
Docker debian12	21m 25s
Java 17 and clang++ on ubuntu-22.04	19m 57s
SIMD programming using C++ intrinsic functions on ubuntu-22.04	9m 5s
Docker ubuntu24	18m 37s
Java 21 and clang++ on ubuntu-22.04	19m 9s
Docker fedora37	18m 53s
C++ General Test on Windows	5m 36s
Java 17 and clang++ on macos-12	20m 38s
Docker oraclelinux9	18m 56s
C++ AVX512 Test on Windows	5m 29s
Java 21 and clang++ on macos-12	22m 23s
Java 17 and clang++ on macos-13	23m 0s
Java 21 and clang++ on macos-13	24m 30s
Java 17 and clang++ on macos-14	22m 19s
Java 21 and clang++ on macos-14	13m 46s
Java 17 and g++ on ubuntu-22.04	19m 34s
	5h 51m 32s

Provide feedback