Mark new function inlinable since it's trivial

Author: grynspan

stdlib/public/Concurrency/CheckedContinuation.swift

@@ -162,6 +162,7 @@ extension CheckedContinuation where T == Void {
   /// After `resume` enqueues the task, control is immediately returned to
   /// the caller. The task will continue executing when its executor is
   /// able to reschedule it.
+  @inlinable
   public func resume() {
     self.resume(returning: ())
   }
@@ -271,6 +272,7 @@ extension CheckedThrowingContinuation where T == Void {
   /// After `resume` enqueues the task, control is immediately returned to
   /// the caller. The task will continue executing when its executor is
   /// able to reschedule it.
+  @inlinable
   public func resume() {
     self.resume(returning: ())
   }

stdlib/public/Concurrency/PartialAsyncTask.swift

@@ -35,6 +35,7 @@ public struct UnsafeContinuation<T> {
 }
 
 extension UnsafeContinuation where T == Void {
+  @inlinable
   public func resume() {
       self.resume(returning: ())
   }
@@ -65,6 +66,7 @@ public struct UnsafeThrowingContinuation<T> {
 }
 
 extension UnsafeThrowingContinuation where T == Void {
+  @inlinable
   public func resume() {
       self.resume(returning: ())
   }