release: Add 3.0.0 release notes (#125)

* release: Add 3.0.0 release notes

* Update v3.0.0.md

* PM edits

---------

Co-authored-by: Luke Kim <80174+lukekim@users.noreply.github.com>

Author: peasee

docs/release_notes/v3.0.0.md

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+# spicepy v3.0.0 (Jan 27, 2025)
+
+The v3.0.0 release upgrades the `spicepy` SDK to align with the standard feature set provided by Spice.ai OSS v1.0 runtime (`spiced`), removing deprecated functions and adding support for dataset refresh.
+
+## Highlights in v3.0.0
+
+- **Dataset Refresh:** Accelerated datasets can be refreshed by the `Client.refresh_dataset(dataset_name, refresh_options)` method.
+
+Example code:
+
+```python
+client.refresh_dataset(
+    "taxi_trips",
+    RefreshOpts(refresh_sql="SELECT * FROM taxi_trips LIMIT 10"),
+)
+```
+
+- **Customizable User Agent:** A user agent string can now be provided to the `Client` when creating a new instance. This user agent is supplied on every HTTP and Flight request.
+
+Example code:
+
+```python
+client = Client(api_key, flight_url, http_url, tls_root_cert, user_agent)
+```
+
+If a user agent is not specified, a default user agent is provided as `spicepy 3.0.0 (<OS type>/<OS version> <OS arch>)`. E.g.: `spicepy 3.0.0 (Linux/5.4.0-1043-aws x86_64)`
+
+## Breaking Changes
+
+- **Fire Query Removed:** All SDK functionality relating to Fire Query has been removed, as Spice.ai OSS 1.0 queries have fire cache functionality by default.
+
+## Contributors
+
+- @phillipleblanc
+- @peasee
+- @slyons
+
+## What's Changed
+
+- deps: Update deps by @peasee in https://github.com/spiceai/spicepy/pull/109
+- feat: Add x-spice-user-agent by @peasee in https://github.com/spiceai/spicepy/pull/110
+- refactor: Update spicepy SDK for feature parity by @peasee in https://github.com/spiceai/spicepy/pull/119
+- docs: Add endgame release process by @peasee in https://github.com/spiceai/spicepy/pull/120
+- Adding custom User-Agent to client by @slyons in https://github.com/spiceai/spicepy/pull/121
+- Prepend user-supplied user-agent by @phillipleblanc in https://github.com/spiceai/spicepy/pull/122
+
+**Full Changelog**: https://github.com/spiceai/spicepy/compare/v2.0.0...v3.0.0