profiles: add canonical Descent (D1X-Rebirth) pod profile

First profile for a non-native game shipped in-repo (profiles/ is new -
profiles previously lived only inside config.json's Profiles array).
Matches d1x-rebirth; buttons map to synthesized DXX default keys with the
kiosk never-map list honored; ViGEm pad carries stick/throttle/pedals and
twitch actions. Worksheet + rationale: dxx-rebirth repo
docs/pod-input-map.md. Known work items before Phase-2 exit there: fixed
axis routing sends throttle/rudder to the trigger axes, and
AxisCalibrationConfig has no detent-to-center field yet.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

profiles/descent-d1x.json

@@ -0,0 +1,74 @@
+{
+  "Name": "Descent",
+  "MatchExecutables": [
+    "d1x-rebirth"
+  ],
+  "PlasmaGreeting": "DESCENT",
+  "WallpaperPath": null,
+  "OverlayLabels": {},
+  "Calibration": {
+    "InvertX": false,
+    "InvertY": false,
+    "InvertZ": false,
+    "InvertXR": false,
+    "InvertYR": false,
+    "InvertZR": false,
+    "EnableZR": true
+  },
+  "Buttons": {
+    "16": 32822,
+    "17": 32823,
+    "18": 32824,
+    "19": 32825,
+    "20": 32816,
+    "21": 32777,
+    "24": 32781,
+    "28": 34991,
+    "29": 34990,
+    "32": 32817,
+    "33": 32818,
+    "34": 32819,
+    "35": 32820,
+    "36": 32821,
+    "37": 32850,
+    "56": 67,
+    "57": 68,
+    "58": 88,
+    "59": 65,
+    "60": 4101,
+    "62": 4102,
+    "63": 83,
+    "64": 4097,
+    "65": 8194,
+    "66": 8192,
+    "67": 8193,
+    "68": 8195,
+    "69": 188,
+    "70": 190,
+    "71": 4099,
+    "80": 48,
+    "81": 49,
+    "82": 50,
+    "83": 51,
+    "84": 52,
+    "85": 53,
+    "86": 54,
+    "87": 55,
+    "88": 56,
+    "89": 57,
+    "90": 9,
+    "91": 66,
+    "92": 82,
+    "95": 70,
+    "96": 28672,
+    "97": 28673,
+    "98": 28674,
+    "99": 28675,
+    "100": 28676,
+    "101": 28677,
+    "102": 28678,
+    "103": 28679,
+    "104": 28680,
+    "105": 28681
+  }
+}