feat(core): Deprecate finish on Span interface in favour of end (#10161)

Looks like we forgot to deprecate the method on the interface (it's
already deprecated on the class).

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Co-authored-by: Luca Forstner <[email protected]>

Author: Lms24

packages/types/src/span.ts

@@ -235,7 +235,10 @@ export interface Span extends SpanContext {
 
   /**
    * Sets the finish timestamp on the current span.
+   *
    * @param endTimestamp Takes an endTimestamp if the end should not be the time when you call this function.
+   *
+   * @deprecated Use `.end()` instead.
    */
   finish(endTimestamp?: number): void;