find-external coin-utils: include coin subdir (#678)

* find-external coin-utils: include coin subdir

to fix clp which tries to include "CoinPragma.hpp" from coin-utils
while coin-utils export include/ as includedir and provide
include/coin/CoinPragma.hpp

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

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---------

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

find-external/CoinUtils/FindCoinUtils.cmake

@@ -43,8 +43,9 @@ mark_as_advanced(CoinUtils_INCLUDE_DIR CoinUtils_LIBRARY)
 if(CoinUtils_FOUND AND NOT TARGET CoinUtils::CoinUtils)
   add_library(CoinUtils::CoinUtils SHARED IMPORTED)
   set_target_properties(
-    CoinUtils::CoinUtils PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
-                                    "${CoinUtils_INCLUDE_DIR}")
+    CoinUtils::CoinUtils
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+               "${CoinUtils_INCLUDE_DIR};${CoinUtils_INCLUDE_DIR}/coin")
   set_target_properties(
     CoinUtils::CoinUtils PROPERTIES IMPORTED_LOCATION_RELEASE
                                     "${CoinUtils_LIBRARY}")