PLT-5308 Caching layer part 2 (#6973)

* Adding Reaction store cache layer example

* Implementing reaction store in new caching system.

* Redis for reaction store

* Adding redis library

* Adding invalidation for DeleteAllWithEmojiName and other minor enhancements

Makefile

@@ -131,6 +131,14 @@ ifeq ($(BUILD_ENTERPRISE_READY),true)
 		echo restarting mattermost-elasticsearch; \
 		docker start mattermost-elasticsearch> /dev/null; \
 	fi
+
+	@if [ $(shell docker ps -a | grep -ci mattermost-redis) -eq 0 ]; then \
+		echo starting mattermost-redis; \
+		docker run --name mattermost-redis -p 6379:6379 -d redis > /dev/null; \
+	elif [ $(shell docker ps | grep -ci mattermost-redis) -eq 0 ]; then \
+		echo restarting mattermost-redis; \
+		docker start mattermost-redis > /dev/null; \
+	fi
 endif
 
 stop-docker: