Add serialization to Did struct type

[KendallWeihe]

No description provided.

[github-actions]

TBD Spec Test Vectors Report (web5-rs)

Total Test Vectors	Total Test Cases	✅ Passed	❌ Failed	⚠️ Skipped
18	5	5	0	0

ℹ️ 5 out of 18 test vectors passed successfully.

❌ Missing Vectors (13)

These are test vectors without any test cases.

Feature	Name
Credentials	create
CryptoEs256k	sign
CryptoEs256k	verify
DidDht	create
DidWeb	resolve
PortableDid	parse
PresentationExchange	create_presentation_from_credentials
PresentationExchange	evaluate_presentation
PresentationExchange	select_credentials
PresentationExchange	validate_definition
PresentationExchange	validate_submission
VcJwt	decode
VcJwt	verify

---

Automatically generated at: 2024-10-07T18:29:36.402Z

[github-actions]

TBD Spec Test Vectors Report (web5-core-kt)

Total Test Vectors	Total Test Cases	✅ Passed	❌ Failed	⚠️ Skipped
18	3	3	0	0

ℹ️ 3 out of 18 test vectors passed successfully.

❌ Missing Vectors (15)

These are test vectors without any test cases.

Feature	Name
Credentials	create
Credentials	verify
CryptoEs256k	sign
CryptoEs256k	verify
DidDht	create
DidDht	resolve
DidWeb	resolve
PortableDid	parse
PresentationExchange	create_presentation_from_credentials
PresentationExchange	evaluate_presentation
PresentationExchange	select_credentials
PresentationExchange	validate_definition
PresentationExchange	validate_submission
VcJwt	decode
VcJwt	verify

---

Automatically generated at: 2024-10-07T18:32:58.948Z