Add phisiart to code owner of webgl module (#1070)

CODEOWNERS

@@ -5,7 +5,7 @@
 *        @dmlc/tvm-committers
 
 # LLVM backends
-src/llvm/*          @aatluri
+src/codegen/llvm/*          @aatluri
 
 # ROCM runtime
 src/runtime/rocm/*    @aatluri
@@ -13,5 +13,9 @@ src/runtime/rocm/*    @aatluri
 # JVM language
 jvm/*   @yzhliu
 
+# WebGL backends
+src/runtime/opengl/*    @phisiart
+src/codegen/*opengl*    @phisiart
+
 # TOPI
 topi/python/topi/*  @Laurawly @Huyuwei

CONTRIBUTORS.md

@@ -48,6 +48,7 @@ and are qualified to lead development and review changes of the owned module.
 - [Leyuan Wang](https://github.com/Laurawly) TOPI
 - [Yuwei Hu](https://github.com/Huyuwei) TOPI
 - [Yizhi Liu](https://github.com/yzhliu) JVM package
+- [Zhixun Tan](https://github.com/phisiart) OpenGL/WebGL backend
 
 
 List of Contributors