chore(perf): realign version to 9.0.0 to match .NET/MAUI versioning

Change version from 1.0.0 to 9.0.0 to align with .NET 9 / MAUI 9.0.x versioning convention. Update all package references, templates, and documentation. Change copyright holder from "MarketAlly LLC" to "MarketAlly Pte Ltd" across all files. Update CHANGELOG to document version realignment and mark 1.0.0 as deprecated. Update release notes to reflect 541 passing tests (up from 217) and include native resource leak fixes, SafeHandle wrappers, and performance benchmarks.

vsix/OpenMaui.VisualStudio/LICENSE.txt

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 MarketAlly LLC
+Copyright (c) 2025 MarketAlly Pte Ltd
 
 Lead Architect: David H. Friedel Jr.
 

vsix/OpenMaui.VisualStudio/source.extension.vsixmanifest

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="OpenMaui.VisualStudio.a1b2c3d4-e5f6-7890-abcd-ef1234567890" Version="1.0.0" Language="en-US" Publisher="MarketAlly LLC" />
+    <Identity Id="OpenMaui.VisualStudio.a1b2c3d4-e5f6-7890-abcd-ef1234567890" Version="1.0.0" Language="en-US" Publisher="MarketAlly Pte Ltd" />
     <DisplayName>OpenMaui - Linux Platform for .NET MAUI</DisplayName>
     <Description xml:space="preserve">Adds Linux platform support to .NET MAUI projects in Visual Studio. Build and deploy MAUI applications to Linux desktops with full SkiaSharp rendering support.
 
@@ -12,7 +12,7 @@ Features:
 • Remote Linux debugging
 • Linux-specific launch profiles
 
-Developed by MarketAlly LLC
+Developed by MarketAlly Pte Ltd
 Lead Architect: David H. Friedel Jr.</Description>
     <MoreInfo>https://github.com/open-maui/maui-linux</MoreInfo>
     <License>LICENSE.txt</License>