[performance] update storage backend and make use of seek syscall when available (#2924)

* update to use go-storage/ instead of go-store/v2/storage/

* pull in latest version from codeberg

* remove test output 😇

* add code comments

* set the exclusive bit when creating new files in disk config

* bump to actual release version

* bump to v0.1.1 (tis a simple no-logic change)

* update readme

* only use a temporary read seeker when decoding video if required (should only be S3 now)

* use fastcopy library to use memory pooled buffers when calling TempFileSeeker()

* update to use seek call in serveFileRange()

internal/iotools/io.go

@@ -20,6 +20,8 @@ package iotools
 import (
 	"io"
 	"os"
+
+	"codeberg.org/gruf/go-fastcopy"
 )
 
 // ReadFnCloser takes an io.Reader and wraps it to use the provided function to implement io.Closer.
@@ -179,7 +181,7 @@ func TempFileSeeker(r io.Reader) (io.ReadSeekCloser, error) {
 		return nil, err
 	}
 
-	if _, err := io.Copy(tmp, r); err != nil {
+	if _, err := fastcopy.Copy(tmp, r); err != nil {
 		return nil, err
 	}