S3 Select client and tests

This class will be used by the S3 select based CSV wrapper, allowing access to individual columns, as well as metadata generation for some types.
The tests are currently not run as part of sanity_tests as a valid AWS_ACCESS_KEY_ID needs to be set in the environment to run the test.

DataMgr/CMakeLists.txt

@@ -39,6 +39,8 @@ set(datamgr_source_files
 if("${MAPD_EDITION_LOWER}" STREQUAL "ee")
 if(ENABLE_AWS_S3)
   list(APPEND datamgr_source_files ForeignStorage/ee/CsvReaderS3.cpp)
+  list(APPEND datamgr_source_files ForeignStorage/ee/S3Utils.cpp)
+  list(APPEND datamgr_source_files ForeignStorage/ee/S3SelectClient.cpp)
 endif()
 endif()
 

Tests/CMakeLists.txt

@@ -201,6 +201,7 @@ endif()
 if(("${MAPD_EDITION_LOWER}" STREQUAL "ee") AND ENABLE_AWS_S3)
   target_link_libraries(UserMappingDdlTest ${THRIFT_HANDLER_TEST_LIBRARIES})
   target_link_libraries(PkiEncryptorTest gtest Logger Shared)
+  target_link_libraries(S3SelectClientTest ${EXECUTE_TEST_LIBS})
 endif()
 
 set(TEST_ARGS "--gtest_output=xml:../")
@@ -276,6 +277,7 @@ endif()
 if(("${MAPD_EDITION_LOWER}" STREQUAL "ee") AND ENABLE_AWS_S3)
   add_test(UserMappingDdlTest UserMappingDdlTest ${TEST_ARGS})
   add_test(PkiEncryptorTest PkiEncryptorTest ${TEST_ARGS})
+  add_test(S3SelectClientTest S3SelectClientTest ${TEST_ARGS})
 endif()
 
 add_executable(ArrowIpcIntegrationTest ArrowIpcIntegrationTest.cpp)