feature: Define L0 Driver API for Driver Version String

Related-To: NEO-11752

- Adds zeIntelGetDriverVersionString to report the driver
version string to the user in the format:
Major.Minor.Patch+Optional

Signed-off-by: Neil R. Spruit <neil.r.spruit@intel.com>

level_zero/api/driver_experimental/public/zex_driver.cpp

@@ -5,9 +5,16 @@
  *
  */
 
+#include "shared/source/helpers/string.h"
+
 #include "level_zero/api/driver_experimental/public/zex_api.h"
 #include "level_zero/core/source/driver/driver.h"
 #include "level_zero/core/source/driver/driver_handle.h"
+#include "level_zero/include/ze_intel_gpu.h"
+
+#include "driver_version.h"
+
+#include <string>
 
 namespace L0 {
 
@@ -36,6 +43,25 @@ zexDriverGetHostPointerBaseAddress(
 
 } // namespace L0
 
+ze_result_t ZE_APICALL
+zeIntelGetDriverVersionString(
+    ze_driver_handle_t hDriver,
+    char *pDriverVersion,
+    size_t *pVersionSize) {
+    ze_api_version_t apiVersion;
+    L0::DriverHandle::fromHandle(hDriver)->getApiVersion(&apiVersion);
+    std::string driverVersionString = std::to_string(ZE_MAJOR_VERSION(apiVersion)) + "." + std::to_string(ZE_MINOR_VERSION(apiVersion)) + "." + std::to_string(NEO_VERSION_BUILD);
+    if (NEO_VERSION_HOTFIX > 0) {
+        driverVersionString += "+" + std::to_string(NEO_VERSION_HOTFIX);
+    }
+    if (*pVersionSize == 0) {
+        *pVersionSize = strlen(driverVersionString.c_str());
+        return ZE_RESULT_SUCCESS;
+    }
+    driverVersionString.copy(pDriverVersion, *pVersionSize, 0);
+    return ZE_RESULT_SUCCESS;
+}
+
 extern "C" {
 
 ZE_APIEXPORT ze_result_t ZE_APICALL