ConfigurableParameter: do not magically overwrite the 'name' attribute
The ClassVarMeta metaclass used to derive each ConfigurableParameter's 'name' attribute automatically from the Python class name (via camel_to_snake()). Stop doing this, for three reasons:
1) Python class names follow constraints that do not fit the naming commonly used in CSV files. For example, a name like "5GS-SUCI-CalcInfo" starts with a digit and contains dashes, neither of which is permissible in a class name.
2) Python class names live in their own namespace, distinct from the one used to present eSIM parameters to end users. Deriving the UI name from the class name couples these two namespaces together.
Taken together, (1) and (2) mean that automatic naming both imposes class-name constraints on the user-visible names and merges the internal Python namespace with the publicly shown one - a layer violation from the perspective of UI design.
3) Overriding 'name' from __new__() makes manual naming impossible: a subclass that sets 'name = "bar"' as a class attribute would still end up with the value computed by the metaclass, which is surprising and hard to track down:
class MySuper(metaclass=...): # __new__ sets name = 'foo' ... class MySub(MySuper): name = 'bar' print(MySub().name) # 'foo', not 'bar' as one would expect
Add ConfigurableParameterTest, which applies each parameter to a real UPP DER template and reads it back, comparing results against a stored expected-output snapshot (xo/test_configurable_parameters).
Add TestValidateVal covering validate_val() for Iccid, Imsi, Pin1, Puk1 and K, testing both valid inputs and invalid ones expected to raise ValueError.
Add TestEnumParam covering the EnumParam methods (validate_val, map_name_to_val, map_val_to_name, name_normalize, clean_name_str) using AlgorithmID as the concrete subclass, including fuzzy name matching.
Also add get_value_from_pes() to ConfigurableParameter as a convenience wrapper around get_values_from_pes() that asserts all returned values are identical and returns the single result.
