Enhancement: Adjust binary file location (#535) (#574)

Previously, all unittest files and binary executable files (such as
observer/obclient) were put together in `build_*/bin` directory.
After the enhancement, the binary executable files and the unittest
files have been separated into the following directories respectively:

- `build_*/bin`
- `build_*/unittest`

Issue Number: close #535 

### After enhancement

```
> cd build_debug
> ls bin/
clog_dump  cpplings  obclient  oblsm_bench  oblsm_cli  observer
> ls unittesttest/
CMakeFiles                 bplus_tree_log_entry_test  codec_test                integer_generator_test  mem_pool_test        ob_lsm_test       pax_storage_test     thread_pool_executor_test
CTestTestfile.cmake        bplus_tree_log_test        common                    log_buffer_test         mvcc_trx_log_test    ob_skiplist_test  persist_test
Makefile                   bplus_tree_test            composite_tuple_test      log_entry_test          ob_arena_test        ob_table_test     pidfile_test
aggregate_hash_table_test  buffer_pool_log_test       disk_buffer_pool_test     log_file_test           ob_block_test        ob_util_test      record_manager_test
arithmetic_operator_test   catalog_test               disk_log_handler_test     log_test                ob_bloomfilter_test  oblsm             ring_buffer_test
bitmap_test                chunk_test                 double_write_buffer_test  lower_bound_test        ob_compaction_test   observer          serializer_test
bp_manager_test            cmake_install.cmake        expression_test           md5_test                ob_lru_cache_test    parser_test       simple_queue_test

```

---------

Signed-off-by: Yadunand Kamath <yadunand.kamath@gmail.com>

Author: yadunand-kamath

.github/workflows/test.yml

@@ -121,12 +121,12 @@ jobs:
         shell: bash
         run: |
           cd build_release
-          ${{matrix.memtracer}} ./bin/memtracer_performance_test
+          ${{matrix.memtracer}} ./benchmark/memtracer_performance_test
       - name: memtracer-unittest
         shell: bash
         run: |
           cd build_release
-          LD_PRELOAD=./lib/libmemtracer.so ./bin/memtracer_test
+          LD_PRELOAD=./lib/libmemtracer.so ./unittest/memtracer_test
       - name: memtracer-sysbench
         shell: bash
         run: |

CMakeLists.txt

@@ -7,6 +7,8 @@ MESSAGE(STATUS "This is Project source dir " ${PROJECT_SOURCE_DIR})
 MESSAGE(STATUS "This is PROJECT_BINARY_DIR dir " ${PROJECT_BINARY_DIR})
 
 SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)
+SET(UNITTEST_OUTPUT_PATH ${PROJECT_BINARY_DIR}/unittest)
+
 SET(CMAKE_PREFIX_PATH "${PROJECT_SOURCE_DIR}/deps/3rd/usr/local;/usr/local;${CMAKE_PREFIX_PATH}")
 SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
 

benchmark/CMakeLists.txt

@@ -12,5 +12,5 @@ FOREACH (F ${ALL_SRC})
     if(NOT ${prjName} STREQUAL "memtracer_performance_test")
         TARGET_LINK_LIBRARIES(${prjName} observer_static oblsm)
     endif()
-    
+    SET_TARGET_PROPERTIES(${prjName} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/benchmark)
 ENDFOREACH (F)

unittest/CMakeLists.txt

@@ -5,6 +5,8 @@ find_package(GTest CONFIG REQUIRED)
 
 include(GoogleTest)
 
+SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${UNITTEST_OUTPUT_PATH})
+
 ADD_SUBDIRECTORY(common)
 ADD_SUBDIRECTORY(oblsm)