Enable IDE0062: MakeLocalFunctionStatic (#14044)

https://docs.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0062

.globalconfig

@@ -911,7 +911,7 @@ dotnet_diagnostic.IDE0060.severity = silent
 dotnet_diagnostic.IDE0061.severity = silent
 
 # IDE0062: MakeLocalFunctionStatic
-dotnet_diagnostic.IDE0062.severity = silent
+dotnet_diagnostic.IDE0062.severity = warning
 
 # IDE0063: UseSimpleUsingStatement
 dotnet_diagnostic.IDE0063.severity = silent

src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs

@@ -1073,7 +1073,7 @@ namespace Microsoft.PowerShell
         private bool ParseFile(string[] args, ref int i, bool noexitSeen)
         {
             // Try parse '$true', 'true', '$false' and 'false' values.
-            object ConvertToBoolIfPossible(string arg)
+            static object ConvertToBoolIfPossible(string arg)
             {
                 // Before parsing we skip '$' if present.
                 return arg.Length > 0 && bool.TryParse(arg.AsSpan().Slice(arg[0] == '$' ? 1 : 0), out bool boolValue)

src/System.Management.Automation/engine/DataStoreAdapterProvider.cs

@@ -51,7 +51,7 @@ namespace System.Management.Automation
         {
             get
             {
-                string GetFullName(string name, string psSnapInName, string moduleName)
+                static string GetFullName(string name, string psSnapInName, string moduleName)
                 {
                     string result = name;
                     if (!string.IsNullOrEmpty(psSnapInName))

src/System.Management.Automation/engine/parser/ast.cs

@@ -1414,7 +1414,7 @@ namespace System.Management.Automation.Language
                 }
             }
 
-            ExperimentalAttribute GetExpAttributeHelper(AttributeAst attributeAst)
+            static ExperimentalAttribute GetExpAttributeHelper(AttributeAst attributeAst)
             {
                 AttributeAst potentialExpAttr = null;
                 string expAttrTypeName = typeof(ExperimentalAttribute).FullName;