Use file creation date for Date Added/CreatedAt (#2553)

* Update mapping.go

CreatedAt = BirthTime

* Update metadata.go

Add BirthTime() function

* Update spread_fs.go

Replacing djherbis/atime package with djherbis/times, as times includes the functionality of atime

* Update go.mod

remove djherbis/atime, add djherbis/times

* Update mapping.go

time package not used anymore

* Update go.sum

removed djherbis/atime, added djherbis/times

* Update spread_fs.go

revert to previous, cannot get rid of /atime after all since it's a dependency of /fscache

* Update go.mod

djherbis/times 1.6.0 now released

* Update go.sum

new sums

* Update metadata.go

Inverted if statement, more readable

* Update go.mod

format fix

* Update go.sum

format fix

* Update go.sum

format fix

* Update go.sum

format fix

* Update metadata.go

variable name times -> fileProperties
check for errors

* Update metadata.go

reverse order of error check

* Update metadata.go

typo

* Update metadata.go

https://github.com/navidrome/navidrome/pull/2553#issuecomment-1787967615

go.mod

@@ -16,6 +16,7 @@ require (
 	github.com/djherbis/atime v1.1.0
 	github.com/djherbis/fscache v0.10.2-0.20220222230828-2909c950912d
 	github.com/djherbis/stream v1.4.0
+	github.com/djherbis/times v1.6.0
 	github.com/dustin/go-humanize v1.0.1
 	github.com/faiface/beep v1.1.0
 	github.com/fatih/structs v1.1.0