Split out ecolor crate (#2399)

* split out ecolor crate

* split up ecolor crate in lots of modules

* add changelog notes

* add readme to ecolor

* put clippy::manual_range_contains on cranky allow list

* fix hex color issues

* doc fixes

* more hex_color fixes

* Document features

* Rename hex_color module to avoid warning

* Sort the feature names

* fix link in CHANGELOG.md

* better wording

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

Cargo.lock

@@ -1293,6 +1293,17 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4f94fa09c2aeea5b8839e414b7b841bf429fd25b9c522116ac97ee87856d88b2"
 
+[[package]]
+name = "ecolor"
+version = "0.19.0"
+dependencies = [
+ "bytemuck",
+ "cint",
+ "color-hex",
+ "document-features",
+ "serde",
+]
+
 [[package]]
 name = "eframe"
 version = "0.19.0"
@@ -1556,10 +1567,9 @@ dependencies = [
  "atomic_refcell",
  "backtrace",
  "bytemuck",
- "cint",
- "color-hex",
  "criterion",
  "document-features",
+ "ecolor",
  "emath",
  "nohash-hasher",
  "parking_lot",