Vendor rawler 0.7.2 unmodified

The crate as crates.io publishes it, minus .cargo-ok, its Cargo.lock and
data/testdata (13 MB of sample files only its own tests read). Not yet
routed through [patch.crates-io]; the next commit is the patch.

third_party/rawler-0.7.2/data/cameras/samsung/nx20.toml

@@ -0,0 +1,14 @@
+make = "SAMSUNG"
+model = "NX20"
+clean_make = "Samsung"
+clean_model = "NX20"
+#blackpoint = 0
+whitepoint = 3750
+color_pattern = "GRBG"
+active_area = [46, 2, 58, 48]
+crop_area = [81, 17, 79, 55]
+hints = ["little_endian"]
+
+[cameras.color_matrix]
+A = [0.7824, -0.3107, -0.0673, -0.4586, 1.2734, 0.2046, -0.0398, 0.1084, 0.6592]
+D65 = [0.6933, -0.2268, -0.0753, -0.4921, 1.3387, 0.1647, -0.0803, 0.1641, 0.6096]