Add go-exiftool (#2560)

* Proposal to add go-exiftool to the list

* Fix typo

README.md

@@ -625,6 +625,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [flop](https://github.com/homedepot/flop) - File operations library which aims to mirror feature parity with [GNU cp](https://www.gnu.org/software/coreutils/manual/html_node/cp-invocation.html).
 * [go-csv-tag](https://github.com/artonge/go-csv-tag) - Load csv file using tag.
 * [go-decent-copy](https://github.com/hugocarreira/go-decent-copy) - Copy files for humans.
+* [go-exiftool](https://github.com/barasher/go-exiftool) - Go bindings for ExifTool, the well-known library used to extract as much metadata as possible (EXIF, IPTC, ...) from files (pictures, PDF, office, ...).
 * [go-gtfs](https://github.com/artonge/go-gtfs) - Load gtfs files in go.
 * [notify](https://github.com/rjeczalik/notify) - File system event notification library with simple API, similar to os/signal.
 * [opc](https://github.com/qmuntal/opc) - Load Open Packaging Conventions (OPC) files for Go.