Add feature for CSS Font Loading API

features/font-loading.yml

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+name: Font loading
+description: The `document.fonts` API dynamically loads custom fonts and tracks when fonts are loading or ready to use.
+spec: https://drafts.csswg.org/css-font-loading-3/
+caniuse: font-loading
+status:
+  compute_from: api.FontFace
+compat_features:
+  - api.Document.fonts
+  - api.FontFace
+  - api.FontFace.FontFace
+  - api.FontFace.worker_support
+  - api.FontFace.display
+  - api.FontFace.family
+  - api.FontFace.featureSettings
+  - api.FontFace.load
+  - api.FontFace.loaded
+  - api.FontFace.status
+  - api.FontFace.stretch
+  - api.FontFace.style
+  - api.FontFace.unicodeRange
+  - api.FontFace.variant
+  - api.FontFace.variationSettings
+  - api.FontFace.weight
+  - api.FontFaceSet
+  - api.FontFaceSet.FontFaceSet
+  - api.FontFaceSet.worker_support
+  - api.FontFaceSet.add
+  - api.FontFaceSet.check
+  - api.FontFaceSet.clear
+  - api.FontFaceSet.delete
+  - api.FontFaceSet.entries
+  - api.FontFaceSet.forEach
+  - api.FontFaceSet.has
+  - api.FontFaceSet.keys
+  - api.FontFaceSet.load
+  - api.FontFaceSet.loading_event
+  - api.FontFaceSet.loadingdone_event
+  - api.FontFaceSet.loadingerror_event
+  - api.FontFaceSet.ready
+  - api.FontFaceSet.size
+  - api.FontFaceSet.status
+  - api.FontFaceSet.values
+  - api.FontFaceSet.@@iterator
+  - api.FontFaceSetLoadEvent
+  - api.FontFaceSetLoadEvent.FontFaceSetLoadEvent
+  - api.FontFaceSetLoadEvent.worker_support
+  - api.FontFaceSetLoadEvent.fontfaces

features/font-loading.yml.dist

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+# Generated from: font-loading.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "35"
+    chrome_android: "35"
+    edge: "79"
+    firefox: "41"
+    firefox_android: "41"
+    safari: "10"
+    safari_ios: "10"
+compat_features:
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "35"
+  #   chrome_android: "35"
+  #   edge: "79"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  #   safari: "10"
+  #   safari_ios: "10"
+  - api.Document.fonts
+  - api.FontFace
+  - api.FontFace.FontFace
+  - api.FontFace.family
+  - api.FontFace.featureSettings
+  - api.FontFace.load
+  - api.FontFace.status
+  - api.FontFace.stretch
+  - api.FontFace.style
+  - api.FontFace.unicodeRange
+  - api.FontFace.weight
+  - api.FontFaceSet
+  - api.FontFaceSet.add
+  - api.FontFaceSet.clear
+  - api.FontFaceSet.delete
+  - api.FontFaceSet.forEach
+  - api.FontFaceSet.has
+  - api.FontFaceSet.load
+  - api.FontFaceSet.loading_event
+  - api.FontFaceSet.loadingdone_event
+  - api.FontFaceSet.loadingerror_event
+  - api.FontFaceSet.ready
+  - api.FontFaceSet.size
+  - api.FontFaceSet.status
+
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "37"
+  #   chrome_android: "37"
+  #   edge: "79"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  #   safari: "10"
+  #   safari_ios: "10"
+  - api.FontFace.loaded
+
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "48"
+  #   chrome_android: "48"
+  #   edge: "79"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  #   safari: "10"
+  #   safari_ios: "10"
+  - api.FontFaceSet.@@iterator
+  - api.FontFaceSet.entries
+  - api.FontFaceSet.keys
+  - api.FontFaceSet.values
+
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "60"
+  #   chrome_android: "60"
+  #   edge: "79"
+  #   firefox: "58"
+  #   firefox_android: "58"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - api.FontFace.display
+
+  # baseline: low
+  # baseline_low_date: 2023-12-07
+  # support:
+  #   chrome: "120"
+  #   chrome_android: "120"
+  #   edge: "120"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  #   safari: "10"
+  #   safari_ios: "10"
+  - api.FontFaceSet.check
+
+  # baseline: false
+  # support:
+  #   chrome: "35"
+  #   chrome_android: "35"
+  #   edge: "79"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  - api.FontFace.variant
+  - api.FontFaceSetLoadEvent
+  - api.FontFaceSetLoadEvent.fontfaces
+
+  # baseline: false
+  # support:
+  #   chrome: "57"
+  #   chrome_android: "57"
+  #   edge: "79"
+  #   firefox: "41"
+  #   firefox_android: "41"
+  - api.FontFaceSetLoadEvent.FontFaceSetLoadEvent
+
+  # baseline: false
+  # support:
+  #   chrome: "69"
+  #   chrome_android: "69"
+  #   edge: "79"
+  #   firefox: "105"
+  #   firefox_android: "105"
+  - api.FontFace.worker_support
+  - api.FontFaceSet.worker_support
+  - api.FontFaceSetLoadEvent.worker_support
+
+  # baseline: false
+  # support:
+  #   safari: "10"
+  #   safari_ios: "10"
+  - api.FontFaceSet.FontFaceSet
+
+  # baseline: false
+  # support:
+  #   firefox: "62"
+  #   firefox_android: "62"
+  - api.FontFace.variationSettings