[mlir][EmitC] Add `class-name-format` option to `wrap-emitc-func-in-class` pass (#211147)
Added the `class-name-format` option that takes a format string used to
generate the wrapper class name.
This provides greater control over the generated `ClassOp` name. When
multiple identically structured IR files need to be programmatically
lowered with this pass and linked, there will be naming conflicts which
this patch provides a method of resolution for.