FIX: Change location of the link xml file so that it can persist beyond an editor shutdown.

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -37,6 +37,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed an issue where batch jobs would fail with "Error: Error building Player because scripts are compiling" if a source generated .inputactions asset is out of sync with its generated source code (ISXB-1300).
 
 ### Changed
+- Changed location of the link xml file (code stripping rules), from a temporary directory to the project Library folder (ISX-2140).
 - Added back the InputManager to InputSystem project-wide asset migration code with performance improvement (ISX-2086).
 - Changed `OnScreenControl` to automaticaly switch, in Single Player with autoswitch enabled, to the target device control scheme when the first component is enabled to prevent bad interactions when it start.
 - Changed paremeter `overrideModifiersNeedToBePressedFirst` to obsolete for `ButtonWithOneModifier`, `ButtonWithTwoModifiers`, `OneModifierComposite` and `TwoModifiersComposite` in favour the new `modifiersOrder` parameter which is more explicit.

Packages/com.unity.inputsystem/InputSystem/Editor/BuildPipeline/LinkFileGenerator.cs

@@ -77,9 +77,12 @@ public string GenerateAdditionalLinkXmlFile(BuildReport report, UnityLinkerBuild
 
             sb.AppendLine("</linker>");
 
-            var filePathName = Path.Combine(Application.dataPath, "..", "Temp", "InputSystemLink.xml");
-            File.WriteAllText(filePathName, sb.ToString());
-            return filePathName;
+            var linkXmlDirectory = Path.Combine(Application.dataPath, "..", "Library", "InputSystem");
+            var linkXmlFile = Path.Combine(linkXmlDirectory, $"{data.target}Link.xml");
+
+            Directory.CreateDirectory(linkXmlDirectory);
+            File.WriteAllText(linkXmlFile, sb.ToString());
+            return linkXmlFile;
         }
 
         static bool IsTypeUsedViaReflectionByInputSystem(Type type)