Add .NET 9 to 10 performance reports (#4889)

* Create linux-wasm-tiger_changepoint_report.md

* Update linux-wasm-tiger_changepoint_report.md

* Create linux-monoaot-ampere_changepoint_report.md

* Create linux-mono-tiger_changepoint_report.md

* Create windows-x64-tiger_changepoint_report.md

* Create linux-x64-tiger_changepoint_report.md

* Add Arm64 report

* Add ranges to MonoAOT and Mono comparison reports.

* Add readme and remove extra unneeded info from arm64 report

---------

Co-authored-by: Drew Scoggins <anscoggi@microsoft.com>
Co-authored-by: Parker Bibus <parkerbibus@microsoft.com>

Author: 3 people

reports/README.md

@@ -0,0 +1,10 @@
+# .NET 9 to .NET 10 Performance Regression Reports
+
+This directory contains reports detailing performance regressions that occurred between .NET 9 and .NET 10. Below is a list of the available reports. Please note that some linked commits may not be the exact commit reponsible, but were a best guess at the likely commit given the range of commits that the regression occurred in.
+
+- [CoreCLR x64 Windows](./windows-x64-tiger_changepoint_report.md)
+- [CoreCLR x64 Linux](./linux-x64-tiger_changepoint_report.md)
+- [CoreCLR Arm64 Linux](./linux-arm64-ampere_changepoint_report.md)
+- [Mono x64 Linux](./linux-mono-tiger_changepoint_report.md)
+- [MonoAOT Arm64 Linux](./linux-monoaot-ampere_changepoint_report.md)
+- [WASM x64 Linux](./linux-wasm-tiger_changepoint_report.md)