[llvm] [OFFLOAD][L0] Implement Event APIs (PR #201306)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- offload/plugins-nextgen/level_zero/include/L0Event.h offload/plugins-nextgen/level_zero/src/L0Event.cpp offload/plugins-nextgen/level_zero/dynamic_l0/L0DynWrapper.cpp offload/plugins-nextgen/level_zero/dynamic_l0/level_zero/ze_api.h offload/plugins-nextgen/level_zero/include/L0CmdListManager.h offload/plugins-nextgen/level_zero/include/L0Context.h offload/plugins-nextgen/level_zero/include/L0Device.h offload/plugins-nextgen/level_zero/include/L0Memory.h offload/plugins-nextgen/level_zero/include/L0Queue.h offload/plugins-nextgen/level_zero/src/L0Device.cpp offload/plugins-nextgen/level_zero/src/L0Memory.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/offload/plugins-nextgen/level_zero/include/L0Event.h b/offload/plugins-nextgen/level_zero/include/L0Event.h
index 0400fa33c..50c8badf3 100644
--- a/offload/plugins-nextgen/level_zero/include/L0Event.h
+++ b/offload/plugins-nextgen/level_zero/include/L0Event.h
@@ -24,18 +24,16 @@ namespace llvm::omp::target::plugin {
 
 class L0QueueTy;
 
-
 class L0EventTy {
   ze_event_handle_t ZeEvent;
   L0QueueTy *Queue = nullptr;
 
 public:
-  L0EventTy(ze_event_handle_t ZeEvent)
-      : ZeEvent(ZeEvent) {}
+  L0EventTy(ze_event_handle_t ZeEvent) : ZeEvent(ZeEvent) {}
   ze_event_handle_t getZeEvent() const { return ZeEvent; }
   L0QueueTy *getQueue() const { return Queue; }
 
-  Error reset () {
+  Error reset() {
     Queue = nullptr;
     CALL_ZE_RET_ERROR(zeEventHostReset, ZeEvent);
     return Plugin::success();
@@ -85,8 +83,10 @@ class EventPoolTy {
   /// L0 event objects cache.
   llvm::SmallVector<L0EventTy *> EventObjects;
 
-  // Internal method to get an event from the pool. The caller must hold the lock.
+  // Internal method to get an event from the pool. The caller must hold the
+  // lock.
   Expected<ze_event_handle_t> getEventLocked();
+
 public:
   /// Initialize context, flags, and mutex.
   Error init(ze_context_handle_t ContextIn, uint32_t FlagsIn) {

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https://github.com/llvm/llvm-project/pull/201306