Add Doxygen Documentation for HostTesnor, HostTensorDescriptor, DeviceMem, FillUniformDistribution (#2160)

* added documentation for HostTensorDescriptor

* added documentation for DeviceMem and FillUniformDistribution

* fixed merging error

* fixed host_tensor_descriptor error

* clang format

include/ck_tile/host/device_memory.hpp

@@ -20,10 +20,35 @@ __global__ void set_buffer_value(T* p, T x, uint64_t buffer_element_size)
 }
 
 /**
- * @brief Container for storing data in GPU device memory
+ * @brief Manages device memory allocation and host-device data transfers
  *
+ * DeviceMem encapsulates GPU memory management operations using HIP runtime API.
+ * It provides functionality for allocating device memory, transferring data between
+ * host and device, and performing basic memory operations.
+ *
+ * Key features:
+ * - Automatic memory allocation and deallocation
+ * - Host-to-device and device-to-host data transfers
+ * - Memory initialization operations
+ * - Integration with HostTensor for simplified data handling
+ *
+ * Usage example:
+ * ```
+ * // Allocate device memory
+ * BHostTensor<float> AHostData({256});
+ * DeviceMem d_mem(BHostData.get_element_space_size_in_bytes());
+ *
+ * // Transfer data to device
+ * HostTensor<float> AHostTensor({256});
+ * d_mem.ToDevice(AHostData.data());
+ *
+ * // Retrieve data from device
+ * HostTensor<float> ResultHostTensor({256});
+ * d_mem.FromDevice(ResultHostTensor.data());
+ * ```
  */
 struct DeviceMem
+
 {
     DeviceMem() : mpDeviceBuf(nullptr), mMemSize(0) {}
     DeviceMem(std::size_t mem_size) : mMemSize(mem_size)
@@ -163,8 +188,8 @@ struct DeviceMem
         }
     }
 
-    void* mpDeviceBuf;
-    std::size_t mMemSize;
+    void* mpDeviceBuf;    ///< pointer to device buffer
+    std::size_t mMemSize; ///< size of device buffer in bytes
 };
 
 } // namespace ck_tile