Add release notes for 1.2 (#209)

Signed-off-by: John Mazanec <[email protected]>

release-notes/opensearch-knn.release-notes-1.2.0.0.md

@@ -0,0 +1,55 @@
+## Version 1.2.0.0 Release Notes
+
+Compatible with OpenSearch 1.2.0
+
+* Add support for faiss library to plugin ([#149](https://github.com/opensearch-project/k-NN/pull/149))
+
+### Enhancements
+
+* Include Model Index status as part of Stats API ([#179](https://github.com/opensearch-project/k-NN/pull/179))
+* Split jnis into 2 libs and add common lib ([#181](https://github.com/opensearch-project/k-NN/pull/181))
+* Generalize error message set in model metadata ([#184](https://github.com/opensearch-project/k-NN/pull/184))
+* Delete local references when looping over map ([#185](https://github.com/opensearch-project/k-NN/pull/185))
+* Add caching of java classes/methods ([#186](https://github.com/opensearch-project/k-NN/pull/186))
+* Add more helpful validation messages ([#183](https://github.com/opensearch-project/k-NN/pull/183))
+* Include index model degraded status as stats for given node ([#188](https://github.com/opensearch-project/k-NN/pull/188))
+* Add training stats and library initialized stats ([#191](https://github.com/opensearch-project/k-NN/pull/191))
+
+### Bug Fixes
+
+* Fix library compile to package openblas statically ([#153](https://github.com/opensearch-project/k-NN/pull/153))
+* Add validation to check max int limit in train API ([#159](https://github.com/opensearch-project/k-NN/pull/159))
+* Support source filtering for model search ([#162](https://github.com/opensearch-project/k-NN/pull/162))
+* Add super call to constructors in transport ([#169](https://github.com/opensearch-project/k-NN/pull/169))
+* Return 400 on failed training request ([#168](https://github.com/opensearch-project/k-NN/pull/168))
+* Add validation to check max k limit ([#178](https://github.com/opensearch-project/k-NN/pull/178))
+* Fix bugs in parameter passing to JNI ([#189](https://github.com/opensearch-project/k-NN/pull/189))
+* Clean up strings releated to faiss feature ([#190](https://github.com/opensearch-project/k-NN/pull/190))
+* Fix issue passing parameters to native libraries ([#199](https://github.com/opensearch-project/k-NN/pull/199))
+* Fix parameter validation for native libraries ([#202](https://github.com/opensearch-project/k-NN/pull/202))
+* Fix field validation in VectorReader ([#207](https://github.com/opensearch-project/k-NN/pull/207))
+
+### Infrastructure
+
+* Update workflow ([#109](https://github.com/opensearch-project/k-NN/pull/109))
+* Use published daily snapshot dependencies ([#119](https://github.com/opensearch-project/k-NN/pull/119))
+* Add DCO workflow check ([#120](https://github.com/opensearch-project/k-NN/pull/120))
+* Update branch pattern ([#123](https://github.com/opensearch-project/k-NN/pull/123))
+* Increment version on main to 1.2.0.0 ([#138](https://github.com/opensearch-project/k-NN/pull/138))
+* Adding knn lib build script ([#154](https://github.com/opensearch-project/k-NN/pull/154))
+* Add lib into knn zip during build ([#163](https://github.com/opensearch-project/k-NN/pull/163))
+* Disable simd for arm faiss ([#166](https://github.com/opensearch-project/k-NN/pull/166))
+* Add checkstyle plugin dependency ([#177](https://github.com/opensearch-project/k-NN/pull/177))
+* Package openmp lib with knnlib in zip and minor fixes ([#175](https://github.com/opensearch-project/k-NN/pull/175))
+* Update license and attributions for faiss addition ([#187](https://github.com/opensearch-project/k-NN/pull/187))
+* Update license headers ([#194](https://github.com/opensearch-project/k-NN/pull/194))
+* Update license headers in gradle files ([#201](https://github.com/opensearch-project/k-NN/pull/201))
+
+### Documentation
+
+* Add support for codeowners to repo ([#206](https://github.com/opensearch-project/k-NN/pull/206))
+
+### Refactoring
+
+* Make model id part of index ([#167](https://github.com/opensearch-project/k-NN/pull/167))
+* Remove unused code from function ([#196](https://github.com/opensearch-project/k-NN/pull/196))