Initial QSfera import

Server/vendor/github.com/gookit/goutil/comdef/comdef.go

@@ -0,0 +1,17 @@
+// Package comdef provide some common type or constant definitions
+package comdef
+
+// ToTypeFunc convert value to defined type
+type ToTypeFunc[T any] func(any) (T, error)
+
+// IntCheckFunc check func
+type IntCheckFunc func(val int) error
+
+// StrCheckFunc check func
+type StrCheckFunc func(val string) error
+
+// ToStringFunc try to convert value to string, return error on fail
+type ToStringFunc func(v any) (string, error)
+
+// SafeStringFunc safe convert value to string
+type SafeStringFunc func(v any) string