spindump: add page (#22346)

pages/osx/spindump.md

@@ -0,0 +1,17 @@
+# spindump
+
+> Profile entire system during a time interval.
+> Used for normal application force quits to display a dialog offering details and the option to report to Apple.
+> More information: <https://keith.github.io/xcode-man-pages/spindump.8.html>.
+
+- Sample all processes for 10 seconds with 10 milliseconds of run time between samples:
+
+`sudo spindump`
+
+- Sort a specific process topmost for a custom duration and interval:
+
+`sudo spindump {{pid|partial_name}} {{duration_seconds}} {{interval_milliseconds}}`
+
+- Write output to a specific file:
+
+`sudo spindump {{pid|partial_name}} -o {{path/to/output.txt}}`