Add support for PiKVM Switch and related features

This commit introduces several new components and improvements:
- Added Switch module with firmware update and configuration support
- Implemented new media streaming capabilities
- Updated various UI elements and CSS styles
- Enhanced keyboard and mouse event handling
- Added new validators and configuration options
- Updated Python version support to 3.13
- Improved error handling and logging

kvmd/mouse.py

@@ -32,3 +32,17 @@ class MouseRange:
     @classmethod
     def remap(cls, value: int, out_min: int, out_max: int) -> int:
         return tools.remap(value, cls.MIN, cls.MAX, out_min, out_max)
+
+    @classmethod
+    def normalize(cls, value: int) -> int:
+        return min(max(cls.MIN, value), cls.MAX)
+
+
+class MouseDelta:
+    MIN = -127
+    MAX = 127
+    RANGE = (MIN, MAX)
+
+    @classmethod
+    def normalize(cls, value: int) -> int:
+        return min(max(cls.MIN, value), cls.MAX)