LibWeb: Add MediaFeatures.json file, and associated identifiers

This data will be used to generate code for parsing media-queries. So
far, it includes all MEDIAQUERIES-4 features, and
`prefers-color-scheme` from MEDIAQUERIES-5 since we support that.

Userland/Libraries/LibWeb/CSS/Identifiers.json

@@ -66,15 +66,16 @@
   "block",
   "bold",
   "bolder",
+  "border-box",
   "both",
   "bottom",
-  "border-box",
   "break-word",
   "capitalize",
   "cell",
   "center",
   "circle",
   "clip",
+  "coarse",
   "col-resize",
   "collapse",
   "column",
@@ -90,6 +91,7 @@
   "crosshair",
   "currentcolor",
   "cursive",
+  "dark",
   "dashed",
   "decimal",
   "decimal-leading-zero",
@@ -100,10 +102,12 @@
   "e-resize",
   "ew-resize",
   "fantasy",
+  "fast",
+  "fine",
   "fixed",
   "flex",
-  "flex-start",
   "flex-end",
+  "flex-start",
   "flow",
   "flow-root",
   "from-font",
@@ -116,31 +120,37 @@
   "help",
   "hidden",
   "high-quality",
+  "hover",
+  "infinite",
   "inline",
   "inline-block",
   "inline-flex",
   "inline-table",
   "inset",
   "inside",
+  "interlace",
   "invert",
   "italic",
   "justify",
+  "landscape",
   "large",
   "larger",
   "left",
+  "light",
   "lighter",
   "line-through",
   "list-item",
   "local",
-  "lowercase",
   "lower-alpha",
   "lower-latin",
   "lower-roman",
+  "lowercase",
   "ltr",
   "medium",
   "middle",
   "monospace",
   "move",
+  "n-resize",
   "ne-resize",
   "nesw-resize",
   "no-drop",
@@ -149,7 +159,6 @@
   "normal",
   "not-allowed",
   "nowrap",
-  "n-resize",
   "ns-resize",
   "nw-resize",
   "nwse-resize",
@@ -157,13 +166,18 @@
   "outset",
   "outside",
   "overline",
+  "p3",
   "padding-box",
+  "paged",
   "pixelated",
   "pointer",
+  "portrait",
   "pre",
   "pre-line",
   "pre-wrap",
   "progress",
+  "progressive",
+  "rec2020",
   "relative",
   "repeat",
   "repeat-x",
@@ -181,11 +195,13 @@
   "ruby-text",
   "ruby-text-container",
   "run-in",
+  "s-resize",
   "sans-serif",
   "scroll",
   "se-resize",
   "separate",
   "serif",
+  "slow",
   "small",
   "small-caps",
   "smaller",
@@ -193,9 +209,9 @@
   "solid",
   "space",
   "space-around",
-  "s-resize",
   "space-between",
   "square",
+  "srgb",
   "static",
   "sticky",
   "stretch",
@@ -222,17 +238,17 @@
   "ui-sans-serif",
   "ui-serif",
   "underline",
-  "uppercase",
   "upper-alpha",
   "upper-latin",
   "upper-roman",
-  "visible",
+  "uppercase",
   "vertical-text",
+  "visible",
+  "w-resize",
   "wait",
   "wavy",
   "wrap",
   "wrap-reverse",
-  "w-resize",
   "x-large",
   "x-small",
   "xx-large",

Userland/Libraries/LibWeb/CSS/MediaFeatures.json

@@ -0,0 +1,151 @@
+{
+    "any-hover": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "hover"
+        ]
+    },
+    "any-pointer": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "coarse",
+            "fine"
+        ]
+    },
+    "aspect-ratio": {
+        "type": "range",
+        "values": [
+            "<ratio>"
+        ]
+    },
+    "color": {
+        "type": "range",
+        "values": [
+            "<integer>"
+        ]
+    },
+    "color-gamut": {
+        "type": "discrete",
+        "values": [
+            "srgb",
+            "p3",
+            "rec2020"
+        ]
+    },
+    "color-index": {
+        "type": "range",
+        "values": [
+            "<integer>"
+        ]
+    },
+    "device-aspect-ratio": {
+        "type": "range",
+        "values": [
+            "<ratio>"
+        ]
+    },
+    "device-height": {
+        "type": "range",
+        "values": [
+            "<length>"
+        ]
+    },
+    "device-width": {
+        "type": "range",
+        "values": [
+            "<length>"
+        ]
+    },
+    "grid": {
+        "type": "discrete",
+        "values": [
+            "<mq-boolean>"
+        ]
+    },
+    "height": {
+        "type": "range",
+        "values": [
+            "<length>"
+        ]
+    },
+    "hover": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "hover"
+        ]
+    },
+    "monochrome": {
+        "type": "range",
+        "values": [
+            "<integer>"
+        ]
+    },
+    "orientation": {
+        "type": "discrete",
+        "values": [
+            "portrait",
+            "landscape"
+        ]
+    },
+    "overflow-block": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "scroll",
+            "paged"
+        ]
+    },
+    "overflow-inline": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "scroll"
+        ]
+    },
+    "pointer": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "coarse",
+            "fine"
+        ]
+    },
+    "prefers-color-scheme": {
+        "type": "discrete",
+        "values": [
+            "light",
+            "dark"
+        ]
+    },
+    "resolution": {
+        "type": "range",
+        "values": [
+            "<resolution>",
+            "infinite"
+        ]
+    },
+    "scan": {
+        "type": "discrete",
+        "values": [
+            "interlace",
+            "progressive"
+        ]
+    },
+    "update": {
+        "type": "discrete",
+        "values": [
+            "none",
+            "slow",
+            "fast"
+        ]
+    },
+    "width": {
+        "type": "range",
+        "values": [
+            "<length>"
+        ]
+    }
+}