Add gabizou related codeowners.

Signed-off-by: Gabriel Harris-Rouquette <gabizou@me.com>

.github/CODEOWNERS

@@ -2,6 +2,11 @@
 # please keep this file in the same order as packages
 
 src/main/java/org/spongepowered/api/boss/** @kashike
+src/main/java/org/spongepowered/api/data/** @gabizou
+src/main/java/org/spongepowered/api/effect/** @gabizou
+src/main/java/org/spongepowered/api/entity/** @gabizou
+src/main/java/org/spongepowered/api/entity/ai/** @Zidane
 src/main/java/org/spongepowered/api/profile/** @kashike
+src/main/java/org/spongepowered/api/registry/** @gabizou
 src/main/java/org/spongepowered/api/text/** @kashike @minecrell
 src/main/java/org/spongepowered/api/world/gamerule/** @kashike