Quick fix due to ordering of includes, had to add #include
<mlir/Transforms/DialectConversion.h> to include/concretelang/Conversion/Utils/GenericOpTypeConversionPattern.h
Replace the macros `LOG_VERBOSE` and `LOG_ERROR` with C++-style
streams retrieved through `log_verbose()` and `log_error()`. This
aligns with the `MLIR` infrastructure and avoids pollution of the
global namespace through a common header file in subsequent
refactoring commits splitting the functionality of `src/main.cpp` into
multiple files.