MM-31063: Change constants to use CamelCase (#16608)

* MM-31063: Change constants to use CamelCase

* store package

* change allcaps to camel case (#16615)

* New tools.mod

Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>

store/sqlstore/preference_store.go

@@ -46,7 +46,7 @@ func (s SqlPreferenceStore) deleteUnusedFeatures() {
 	WHERE
 	Category = :Category
 	AND Value = :Value
-	AND Name LIKE '` + store.FEATURE_TOGGLE_PREFIX + `%'`
+	AND Name LIKE '` + store.FeatureTogglePrefix + `%'`
 
 	queryParams := map[string]string{
 		"Category": model.PREFERENCE_CATEGORY_ADVANCED_SETTINGS,