Add SISO v36 typed wire API for 0.2

[RejectKid]

What

• imports the official SISO-REF-010-2025 v36 machine-readable catalog for all 131 DIS-relevant enumeration/bitfield types
• generates .NET-style enums and structured bitfield value types across all DIS v7 models and codecs
• preserves unknown enum values and reserved bitfield bits losslessly
• adds a typed Signal encoding scheme for encoding class, audio type, and TDL message count
• makes descriptive names canonical for 20 formerly empty PDU aliases
• consolidates Signal samples under SampleCount

Why

The 0.1 API exposed many SISO-defined wire values as unexplained integers and contained empty descriptive alias classes that deserialization never returned. This is the planned pre-1.0 public API cleanup for the 0.2 line.

Breaking changes

• SISO-backed integer properties are now typed enums or bitfield value structs.
• acronym-heavy PDU names such as AcknowledgeRPdu are replaced by descriptive names such as AcknowledgeReliablePdu.
• SignalPdu.Samples is now SignalPdu.SampleCount.
• Signal and Intercom Signal EncodingScheme is now SignalEncodingScheme (raw ushort values remain implicitly convertible).

Validation

• Release tests: 100 passed on .NET 10; library builds for .NET 9 and .NET 10
• scoped dotnet format verification passed
• generator regeneration was hash-verified as deterministic
• OpenDisNet 0.2.0 nupkg and snupkg built and contents inspected
• official v36 archive SHA-256: 38E50743C89E576E40E6C3B5EEEC118116E82A84CE85C55DBF68E125BCA61567

The local Windows environment still denies the generator verify process read access to checked-in generated files; CI runs the normal verify command on clean Windows and Linux runners.