Complete vnd7050aj module integration

- Move DTS binding from project root to module folder
- Update module.yml to use correct dts_root path
- Restructure module for better organization and portability
- All module files now self-contained in modules/vnd7050aj/

Module structure:
- CMakeLists.txt: Uses zephyr_library for proper integration
- Kconfig: Module configuration options
- dts/bindings/: Device tree binding definitions
- include/: Public header files
- src/: Module source code
- zephyr/module.yml: Module discovery and configuration

Build verified successful on both x86 and ARM targets.

modules/vnd7050aj/Kconfig

@@ -0,0 +1,34 @@
+# VND7050AJ Driver Configuration
+
+config VND7050AJ
+	bool "VND7050AJ driver"
+	default y
+	help
+	  Enable the VND7050AJ driver for interfacing with VND7050AJ devices.
+	  This driver provides basic functionality for VND7050AJ operations.
+
+if VND7050AJ
+
+config VND7050AJ_INIT_PRIORITY
+	int "VND7050AJ initialization priority"
+	default 80
+	help
+	  VND7050AJ driver initialization priority. This should be set to a value
+	  that ensures the driver is initialized after the required subsystems
+	  (like GPIO, I2C, SPI) but before application code runs.
+
+config VND7050AJ_LOG_LEVEL
+	int "VND7050AJ Log level"
+	depends on LOG
+	default 3
+	range 0 4
+	help
+	  Sets log level for VND7050AJ driver.
+	  Levels are:
+	  0 OFF, do not write
+	  1 ERROR, only write LOG_ERR
+	  2 WARNING, write LOG_WRN in addition to previous level
+	  3 INFO, write LOG_INF in addition to previous levels
+	  4 DEBUG, write LOG_DBG in addition to previous levels
+
+endif # VND7050AJ