Add @ericl as codeowner of autoscaler (#28458)

Reasonable point was made offline about the perils of having only 2 code owners on a thing, so adding @ericl and a 3rd code owner as he's likely contributed the 3rd most code to the autoscaler. 

Signed-off-by: Alex Wu <alex@anyscale.io>

Signed-off-by: Alex Wu <alex@anyscale.io>

.github/CODEOWNERS

@@ -21,7 +21,7 @@
 /python/ray/autoscaler/_private/monitor.py @wuisawesome @DmitriGekhtman
 
 # Autoscaler
-/python/ray/autoscaler/ @wuisawesome @DmitriGekhtman
+/python/ray/autoscaler/ @wuisawesome @DmitriGekhtman @ericl
 
 # Metrics
 /src/ray/stats/metric_defs.h @ericl @scv119 @rkooo567