Existing `get`/`set` logic is flawed in that it doesn't work on Big Endian operating systems, and it allocates heap objects when it doesn't need to.
`System.Buffers.Binary.BinaryPrimitives` in the `System.Memory` NuGet package provides both Little Endian and Big Endian methods to read and write data; all the `get`/`set` operations have been reworked to use this new API. This removes the need for PKHeX's manual `BigEndian` class, as all functions are already covered by the BinaryPrimitives API.
The `StringConverter` has now been rewritten to accept a Span to read from & write to, no longer requiring a temporary StringBuilder.
Other Fixes included:
- The Super Training UI for Gen6 has been reworked according to the latest block structure additions.
- Cloning a Stadium2 Save File now works correctly (opening from the Folder browser list).
- Checksum & Sanity properties removed from parent PKM class, and is now implemented via interface.
Removes 1.5MB of allocation; we don't need to preserve the encrypted state.
Revise savefile clone operation to use its own constructor, as we need to call the base constructor first (backup file clone...) prior to decrypting.
Expose CryptStaticXorpadBytes as GetDecryptedRawData no longer exists.
don't use FIPS compliant hashing methods explicitly, no real reason to. hash.Create() will select managed vs csp depending on the framework/core and reg flags.
add >net46 incremental hash logic for swsh
remove static sha256 instance (single threaded overkill)
