* add release note for 3.0 alpha1

Signed-off-by: RS146BIJAY <rishavsagar4b1@gmail.com>

* Combine old 3.0.0.0 with 3.0.0.0-alpha1 release notes

Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>

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Signed-off-by: RS146BIJAY <rishavsagar4b1@gmail.com>
Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>
Co-authored-by: Peter Zhu <zhujiaxi@amazon.com>