Add another entry to CODEOWNERS
# please keep this file in the same order as packages
src/main/java/org/spongepowered/api/boss/** @kashike
+src/main/java/org/spongepowered/api/command/** @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
