Stop using WASM types in the adapter

In support of https://github.com/0xMiden/feedback/issues/106, the adapter can stop using Miden WASM types. This will simplify the process of having to run the unstable version of Miden Wallet against a local node.

The adapter uses the following types:
* NoteFilterTypes (enum)
* InputNoteState (enum)
* NoteType (enum)
* TransactionRequest (class)

For the enums, we can either duplicate the enums in the adapter or use plain numbers. All of the enums are number-based. The `TransactionRequest` type is used for a parameter, and can be replaced with a serialized string representation of the same object.

Locate the adapter's usage of NoteFilterTypes, InputNoteState, NoteType, and TransactionRequest. Replace the WASM enum types with either duplicated enums or plain numbers. For TransactionRequest, change the parameter to accept a serialized string representation. Test by running the unstable Miden Wallet against a local node to ensure compatibility.

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