feat: implement caldav search

vendor/github.com/dolanor/caldav-go/icalendar/properties/names.go

@@ -0,0 +1,31 @@
+package properties
+
+import "strings"
+
+type PropertyName string
+
+const (
+	UIDPropertyName                 PropertyName = "UID"
+	CommentPropertyName                          = "COMMENT"
+	OrganizerPropertyName                        = "ORGANIZER"
+	AttendeePropertyName                         = "ATTENDEE"
+	ExceptionDateTimesPropertyName               = "EXDATE"
+	RecurrenceDateTimesPropertyName              = "RDATE"
+	RecurrenceRulePropertyName                   = "RRULE"
+	LocationPropertyName                         = "LOCATION"
+)
+
+type ParameterName string
+
+const (
+	CanonicalNameParameterName  ParameterName = "CN"
+	TimeZoneIdPropertyName                    = "TZID"
+	ValuePropertyName                         = "VALUE"
+	AlternateRepresentationName               = "ALTREP"
+)
+
+type Params map[ParameterName]string
+
+func (p PropertyName) Equals(test string) bool {
+	return strings.EqualFold(string(p), test)
+}