add SOVERSION to the shared library output (#375)

* add SOVERSION to the shared library output

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: phlptp

units/CMakeLists.txt

@@ -57,6 +57,10 @@ if(UNITS_BUILD_SHARED_LIBRARY)
     )
     target_link_libraries(units PRIVATE compile_flags_target)
 
+    set_target_properties(
+        units PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR}
+    )
+
     if(UNITS_NAMESPACE)
         target_compile_definitions(units PUBLIC -DUNITS_NAMESPACE=${UNITS_NAMESPACE})
     endif()