Replace Rustybuzz with Parley for text layout, and add text tilt parameter (#2739)

* replace rustybuzz with parley for text layout handling

change text input direction based on text direction

* Code review

* change default character spacing to 0

* add shear to text node

this also adds migration code for documents that don't have shear

* shear migration for text node

- add shear property
- set character spacing to 0

* use old max_width and max_height in text migration if available

* Final code review pass

* Add units to the parameters

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

Cargo.toml

@@ -116,7 +116,8 @@ rand_chacha = "0.9"
 glam = { version = "0.29", default-features = false, features = ["serde", "scalar-math", "debug-glam-assert"] }
 base64 = "0.22"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp"] }
-rustybuzz = "0.20"
+parley = "0.5.0"
+skrifa = "0.32.0"
 pretty_assertions = "1.4.1"
 fern = { version = "0.7", features = ["colored"] }
 num_enum = "0.7"