Create new library Raw-rs including a basic TIFF decoder (#1757)

* add a basic tiff decoder in raw-rs

* cargo fmt

* add readme and license files

* add warning about being in-progress

* add testing framework for raw-rs

* add new type IFD and rename tag

* remove test_each and merge into single test

* cargo fmt

* make sure images folder stays in git

* rename image_length with image_height

* change name of test file

* Readme changes

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

libraries/raw-rs/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "raw-rs"
+version = "0.0.1"
+edition = "2021"
+authors = ["Graphite Authors <contact@graphite.rs>"]
+description = "A library to extract images from camera raw files"
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+keywords = ["raw", "tiff", "camera", "image"]
+categories = ["multimedia::images", "multimedia::encoding"]
+homepage = "https://github.com/GraphiteEditor/Graphite/tree/master/libraries/raw-rs"
+repository = "https://github.com/GraphiteEditor/Graphite/tree/master/libraries/raw-rs"
+documentation = "https://docs.rs/raw-rs"
+
+[dependencies]
+num_enum = "0.7.2"
+thiserror = { workspace = true }
+
+[dev-dependencies]
+libraw-rs = "0.0.4"
+downloader = "0.2.7"