chore(repo): baseline du fork input-remapper (upstream v2.2.1)

Le dépôt ne contenait que README.md ; ajout de l'intégralité du code
fonctionnel du fork comme socle stable de la branche de release.
L'état runtime d'orchestration (.ideai/) est exclu du suivi.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

inputremapper/utils.py

@@ -0,0 +1,64 @@
+# -*- coding: utf-8 -*-
+# input-remapper - GUI for device specific keyboard mappings
+# Copyright (C) 2025 sezanzeb <b8x45ygc9@mozmail.com>
+#
+# This file is part of input-remapper.
+#
+# input-remapper is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# input-remapper is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with input-remapper.  If not, see <https://www.gnu.org/licenses/>.
+
+
+"""Utility functions."""
+
+import sys
+from hashlib import md5
+from typing import Optional, NewType
+
+import evdev
+
+DeviceHash = NewType("DeviceHash", str)
+
+
+def is_service() -> bool:
+    return sys.argv[0].endswith("input-remapper-service")
+
+
+def get_device_hash(device: evdev.InputDevice) -> DeviceHash:
+    """get a unique hash for the given device."""
+    # The builtin hash() function can not be used because it is randomly
+    # seeded at python startup.
+    # A non-cryptographic hash would be faster but there is none in the standard lib
+    # This hash needs to stay the same across reboots, and even stay the same when
+    # moving the config to a new computer.
+    s = str(device.capabilities(absinfo=False)) + device.name
+    return DeviceHash(md5(s.encode()).hexdigest().lower())
+
+
+def get_evdev_constant_name(type_: Optional[int], code: Optional[int], *_) -> str:
+    """Handy function to get the evdev constant name for display purposes.
+
+    Returns "unknown" for unknown events.
+    """
+    # using this function is more readable than
+    #   type_, code = event.type_and_code
+    #   name = evdev.ecodes.bytype[type_][code]
+    name = evdev.ecodes.bytype.get(type_, {}).get(code)
+
+    if type(name) in [list, tuple]:
+        # python-evdev >= 1.8.0 uses tuples
+        name = name[0]
+
+    if name is None:
+        return "unknown"
+
+    return name