Disable coulombgalore build and install

Author: mlund

cmake/ExternalTools.cmake

@@ -210,6 +210,8 @@ FetchContent_Declare(
     coulombgalore
     URL https://github.com/mlund/coulombgalore/archive/4055f58538d781acccb2937ab4580855fcba31f8.tar.gz
     URL_HASH MD5=922f0c5988c0f70c887d65b7cf2762ac
+    BUILD_COMMAND ""
+    INSTALL_COMMAND ""
     DOWNLOAD_EXTRACT_TIMESTAMP true)
 FetchContent_GetProperties(coulombgalore)
 if(NOT coulombgalore_POPULATED)