feat: Add Fields impl for Link

[alekzvik]

Closes

• Implement Fields for Link #501

Description

Add implementation of Field trait for Link.

Checklist

Delete any checklist items that do not apply (e.g. if your change is minor, it may not require documentation updates).

• Unit tests
• Documentation, including doctests
• Git history is linear
• Commit messages are descriptive
• (optional) Git commit messages follow conventional commits
• Code is formatted (cargo fmt)
• cargo test
• Changes are added to the CHANGELOG

[alekzvik]

Disclaimer:
I am new to rust, so I picked an issue and tried to do it.
Please let me know if something can be improved.

[gadomski]

Awesome, thanks for the contribution! As of #507, I think we could just #[derive(Fields)] on the Links structure, rather than manually implementing it. See

stac-rs/crates/core/src/collection.rs

Line 25 in 533a8b3

#[derive(Debug, Serialize, Deserialize, PartialEq, Clone, SelfHref, Links, Fields)]

for an example.

[alekzvik]

The code is ready.

I am a bit lost with the CHANGELOG.md though. The change I made is in the stac_types crate. Do we need a separate CHANGELOG.md for it? If yes, did you use any tool to generate the first version?

Currently, the change is reflected in the core crate CHANGELOG.

[gadomski]

I am a bit lost with the CHANGELOG.md though. The change I made is in the stac_types crate. Do we need a separate CHANGELOG.md for it? If yes, did you use any tool to generate the first version?

Yeah, stac-types is new, and I think won't be used by most folks. We re-export it in stac so it's fine to update the changelog there, thanks!