Initial implementation of upload files api. (#1703)

* Initial implementation of upload files api.

* Move sanitize method to utils.

* Save uploaded data to uploads folder.

* Avoid loop if we do not have a purpose.

* Minor cleanup of api and fix bug where deleting duplicate filename cause error.

* Revert defer of saving config

* Moved creation of directory to startup.

* Make file names unique when storing on disk.

* Add test for files api.

* Update dependencies.

main.go

@@ -142,6 +142,12 @@ func main() {
 				EnvVars: []string{"AUDIO_PATH"},
 				Value:   "/tmp/generated/audio",
 			},
+			&cli.StringFlag{
+				Name:    "upload-path",
+				Usage:   "Path to store uploads from files api",
+				EnvVars: []string{"UPLOAD_PATH"},
+				Value:   "/tmp/localai/upload",
+			},
 			&cli.StringFlag{
 				Name:    "backend-assets-path",
 				Usage:   "Path used to extract libraries that are required by some of the backends in runtime.",
@@ -227,6 +233,7 @@ For a list of compatible model, check out: https://localai.io/model-compatibilit
 				options.WithDebug(ctx.Bool("debug")),
 				options.WithImageDir(ctx.String("image-path")),
 				options.WithAudioDir(ctx.String("audio-path")),
+				options.WithUploadDir(ctx.String("upload-path")),
 				options.WithF16(ctx.Bool("f16")),
 				options.WithStringGalleries(ctx.String("galleries")),
 				options.WithModelLibraryURL(ctx.String("remote-library")),