Substitute underscores with hyphens in CMakeLists

Using hyphens is preffered throughout the project. This should be
applied to CMakeLists.txt as well

CMakeLists.txt

@@ -13,15 +13,15 @@ set(GRID_LIB_URL "http://tesla.parallel.ru/vonopr/explelibx-mgrid.git"
 set(GRID_LIB_TAG "c345859b9ebca2227e3b3faea4cc2380fdbb054f"
   CACHE STRING "Specify the branch name, tag name or commit hash of the downloaded 'explelibx-mgrid' dependency; used if DOWNLOAD_DEPS enabled")
 
-# download dependency 'explelibx_common' or find it locally
+# download dependency 'explelibx-common' or find it locally
 if (DOWNLOAD_DEPS)
   include(FetchContent)
   FetchContent_Declare(
-    explelibx_common
+    explelibx-common
     GIT_REPOSITORY "${COMMON_LIB_URL}"
     GIT_TAG "${COMMON_LIB_TAG}")
-  FetchContent_MakeAvailable(explelibx_common)
-  set(COMMON_DIR "${explelibx_common_SOURCE_DIR}")
+  FetchContent_MakeAvailable(explelibx-common)
+  set(COMMON_DIR "${explelibx-common_SOURCE_DIR}")
 else()
   if (NOT DEFINED COMMON_DIR)
     file(REAL_PATH "${PROJECT_SOURCE_DIR}/../../explelibx-common" COMMON_DIR)
@@ -34,15 +34,15 @@ else()
   message("    COMMON_DIR: ${COMMON_DIR}")
 endif()
 
-# download dependency 'explelibx_mgrid' or find it locally
+# download dependency 'explelibx-mgrid' or find it locally
 if (DOWNLOAD_DEPS)
   include(FetchContent)
   FetchContent_Declare(
-    explelibx_mgrid
+    explelibx-mgrid
     GIT_REPOSITORY "${GRID_LIB_URL}"
     GIT_TAG "${GRID_LIB_TAG}")
-  FetchContent_MakeAvailable(explelibx_mgrid)
-  set(GRID_DIR "${explelibx_mgrid_SOURCE_DIR}")
+  FetchContent_MakeAvailable(explelibx-mgrid)
+  set(GRID_DIR "${explelibx-mgrid_SOURCE_DIR}")
 else()
   if (NOT DEFINED GRID_DIR)
     file(REAL_PATH "${PROJECT_SOURCE_DIR}/../../explelibx-mgrid" GRID_DIR)
@@ -80,7 +80,7 @@ list(TRANSFORM CURRENT_SOURCES PREPEND "${SOURCE_DIR}/")
 list(TRANSFORM CURRENT_HEADERS PREPEND "${HEADER_DIR}/")
 
 # set targets
-add_executable(exple_add_numbers
+add_executable(exple-add-numbers
   "${CURRENT_SOURCES}" 
   "${CURRENT_HEADERS}"
   "${COMMON_SOURCES}" 
@@ -88,9 +88,7 @@ add_executable(exple_add_numbers
   "${GRID_SOURCES}"
   "${GRID_HEADERS}")  # headers should be explicitly added to the target to be shown in IDEs after mentioned in source_group()
                      # if using Visual Studio switch to project's target representation
-set_property(TARGET exple_add_numbers PROPERTY OUTPUT_NAME  "exple-add-numbers")
-
-target_include_directories(exple_add_numbers PRIVATE
+target_include_directories(exple-add-numbers PRIVATE
   "${HEADER_DIR}"
   "${COMMON_HEADER_DIR}"
   "${GRID_HEADER_DIR}")