docs: Add owners file (#621)

Signed-off-by: feng-tao <fengtao04@gmail.com>

OWNERS.md

+* See [CONTRIBUTING.md](CONTRIBUTING.md) for general contribution guidelines.
+* See [GOVERNANCE.md](GOVERNANCE.md) for governance guidelines.
+
+This page lists all the maintainers for Amundsen.  This can be used for
+routing PRs, questions, etc. to the right place.
+
+# Amundsen committers
+- Tao Feng (https://github.com/feng-tao)
+- Jin Hyuk Chang (https://github.com/jinhyukchang)
+- Tamika Tannis (https://github.com/ttannis)
+- Daniel Won (https://github.com/danwom)
+- Marcos Iglesias (https://github.com/golodhros)
+- Diksha Thakur (https://github.com/dikshathakur3119)
+- Allison Suarez Miranda (https://github.com/allisonsuarez)
+- Shenghu Yang (https://github.com/shenghuy)
+- Mark Grover (https://github.com/markgrover)
+- Verdan Mahmood (https://github.com/verdan)
+- Bolke de Bruin (https://github.com/bolkedebruin)
+- Mariusz Gorski (https://github.com/mgorsk1)