Improved GitHub Action to run clang-format as part of clang-tidy
* Simplify clang-tidy workflow
* Added modernize-use-using, modernize-redundant-void-arg, readability-static-accessed-through-instance
* Add nolint for libecl typedefs
* Add curve name template and handling of string variables
* Mark autoName as obsolete field
* Use key-value map to populate variable values
* Add curve naming methods Auto, Custom and Template