Merge bitcoin/bitcoin#31722: cmake: Copy cov_tool_wrapper.sh.in to the build tree

e3c0152769 cmake: Copy `cov_tool_wrapper.sh.in` to the build tree (Hennadii Stepanov)

Pull request description:

  This PR ensures that `cov_tool_wrapper.sh.in` is available when invoking the `Coverage.cmake` script from any directory.

  Here is an example of usage on Ubuntu 24.10 with the default GCC 14.2.0:
  ```
  $ cmake -B build -DCMAKE_BUILD_TYPE=Coverage -DCMAKE_CXX_FLAGS="-fprofile-update=atomic" -DCMAKE_C_FLAGS="-fprofile-update=atomic"
  $ cmake --build build -j $(nproc)
  $ cd ..
  $ cmake -DJOBS=$(nproc) -DLCOV_OPTS="--ignore-errors inconsistent,inconsistent" -P bitcoin/build/Coverage.cmake
  ```

  Fixes https://github.com/bitcoin/bitcoin/issues/31638.

ACKs for top commit:
  theuni:
    utACK e3c0152769

Tree-SHA512: ccfc8e893567f199d9b05ea3916cac06fca89c5892cc7492d5251c331c35408222fd918ed08017515e2dfca10970ae3f633b3917bfb7037db539559e71d7f711

cmake/script/CoverageInclude.cmake.in

@@ -12,7 +12,7 @@ endif()
 
 # COV_TOOL is used to replace a placeholder.
 configure_file(
-  cmake/cov_tool_wrapper.sh.in ${CMAKE_CURRENT_LIST_DIR}/cov_tool_wrapper.sh
+  ${CMAKE_CURRENT_LIST_DIR}/cov_tool_wrapper.sh.in ${CMAKE_CURRENT_LIST_DIR}/cov_tool_wrapper.sh
   FILE_PERMISSIONS OWNER_READ OWNER_EXECUTE
                    GROUP_READ GROUP_EXECUTE
                    WORLD_READ