Tracking issue for `developer_hub` crate

In the context of Polkadot-SDK Developer Hub https://github.com/paritytech/polkadot-sdk/pull/2102, this issue is used to track progress in the crate dev


```[tasklist]
### Tasks
- [ ] https://github.com/paritytech/polkadot-sdk-docs/issues/37
- [ ] https://github.com/paritytech/polkadot-sdk-docs/issues/38
```
