refactor performance counter code

This commit performs some general refactoring, including...
- avoid manually duplicating the event list;
- rework the 'is important' event flag;
- remove the new packages (Cyotek.Collections can be replaced with built-in types, and System.ValueTuple won't work in the Mono version used on Linux/Mac);
- improve performance;
- minor cleanup.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/SMAPI/Framework/Events/IManagedEvent.cs b/src/SMAPI/Framework/Events/IManagedEvent.cs
index 04476866..e4e3ca08 100644
--- a/src/SMAPI/Framework/Events/IManagedEvent.cs
+++ b/src/SMAPI/Framework/Events/IManagedEvent.cs
@@ -1,7 +1,15 @@
 namespace StardewModdingAPI.Framework.Events
 {
+    /// <summary>Metadata for an event raised by SMAPI.</summary>
     internal interface IManagedEvent
     {
-        string GetName();
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>A human-readable name for the event.</summary>
+        string EventName { get; }
+
+        /// <summary>Whether the event is typically called at least once per second.</summary>
+        bool IsPerformanceCritical { get; }
     }
 }