Rename Raw-rs to Rawkit (#2088)

* Rename within files

* Rename in CI

* Rename the folder and file names

* Rename raw_rs to rawkit

* Add example to README

* Add initial documentation

* Small API changes and extra documentation

* Bump versions and stuff

* Readme improvements

* Merge proc-macro crates into one

* Add README to rawkit-proc-macros

* Remove keywords and categories

* Add licenses to rawkit-proc-macros

---------

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

libraries/rawkit/src/preprocessing/scale_to_16bit.rs

@@ -0,0 +1,15 @@
+use crate::{RawImage, RawPixel, SubtractBlack};
+
+impl RawImage {
+	pub fn scale_to_16bit_fn(&self) -> impl Fn(RawPixel) -> u16 {
+		let black_level = match self.black {
+			SubtractBlack::CfaGrid(x) => x,
+			_ => unreachable!(),
+		};
+
+		let maximum = self.maximum - black_level.iter().max().unwrap();
+		let scale_to_16bit_multiplier = if maximum > 0 { u16::MAX as f64 / maximum as f64 } else { 1. };
+
+		move |pixel: RawPixel| ((pixel.value as f64) * scale_to_16bit_multiplier).min(u16::MAX as f64).max(0.) as u16
+	}
+}