[WIP] clang-tidy CI test : enable performance-enum-size check

[lucafedeli88]

This PR enables the following check in clang-tidy CI test :

• performance-enum-size
  From the description :

Recommends the smallest possible underlying type for an enum or enum class based on the range of its enumerators. Analyzes the values of the enumerators in an enum or enum class, including signed values, to recommend the smallest possible underlying type that can represent all the values of the enum.

This check was introduced in clang-tidy v18, and we temporarily disabled it when we switched from clang-tidy v17 to clang-tidy v18 to enable the switch to C++20 ( #6606 ). However, per se, the check only requires C++ 11.

[lucafedeli88]

It's difficult to deal with AMREX_ENUM. I have to close this for the moment.