Update OWNERS approvers and reviewers: pkg/api

pkg/api/v1/OWNERS

@@ -0,0 +1,41 @@
+reviewers:
+- thockin
+- lavalamp
+- smarterclayton
+- wojtek-t
+- deads2k
+- yujuhong
+- brendandburns
+- derekwaynecarr
+- caesarxuchao
+- vishh
+- mikedanese
+- liggitt
+- nikhiljindal
+- bprashanth
+- gmarek
+- erictune
+- davidopp
+- pmorie
+- sttts
+- kargakis
+- dchen1107
+- saad-ali
+- zmerlynn
+- luxas
+- janetkuo
+- justinsb
+- roberthbailey
+- ncdc
+- timstclair
+- eparis
+- timothysc
+- piosz
+- jsafrane
+- dims
+- errordeveloper
+- madhusudancs
+- krousey
+- jayunit100
+- rootfs
+- markturansky