feat(manifest): update SSMS targets

- Updated installation targets to support both SSMS 13–18 (32-bit) and SSMS 19+ (64-bit).

- Changed .NET Framework dependency from [4.8.1,) to [4.8,) to resolve a Microsoft VSIX bug/quirk that doesn't recognize the patch number.

- Removed IntegratedShell target.

Author: Finnegan, Kevin

src/SQLScriptsExplorer.Addin/source.extension.vsixmanifest

@@ -1,27 +1,29 @@
 <?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="SQLScriptsExplorer.Addin.b22c3965-9172-4eab-980d-a833bee345ab" Version="1.0" Language="en-US" Publisher="Joao Ribeiro Neto" />
-    <DisplayName>SQL Scripts Explorer Addin.</DisplayName>
-    <Description>Collaborate SQL Scripts between teams.</Description>
-  </Metadata>
-  <Installation AllUsers="true">
-    <InstallationTarget Id="ssms" Version="[13.0,)">
-      <ProductArchitecture>amd64</ProductArchitecture>
-    </InstallationTarget>
-    <InstallationTarget Version="[13.0,)" Id="Microsoft.VisualStudio.IntegratedShell">
-      <ProductArchitecture>amd64</ProductArchitecture>
-    </InstallationTarget>
-  </Installation>
-  <Dependencies>
-    <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.8.1,)" />
-    <Dependency Id="Microsoft.VisualStudio.MPF.16.0" DisplayName="Visual Studio MPF 16.0" d:Source="Installed" Version="[16.0,)" />
-  </Dependencies>
-  <Prerequisites>
-    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[16.0,)" DisplayName="Visual Studio core editor" />
-  </Prerequisites>
-  <Assets>
+	<Metadata>
+		<Identity Id="SQLScriptsExplorer.Addin.b22c3965-9172-4eab-980d-a833bee345ab" Version="1.0" Language="en-US" Publisher="Joao Ribeiro Neto" />
+		<DisplayName>SQL Scripts Explorer Addin.</DisplayName>
+		<Description>Collaborate SQL Scripts between teams.</Description>
+	</Metadata>
+	<Installation AllUsers="true">
+		<!-- SSMS 13–18 (32-bit) -->
+		<InstallationTarget Id="ssms" Version="[13.0, 18.0)">
+			<ProductArchitecture>x86</ProductArchitecture>
+		</InstallationTarget>
 
-    <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />
-  </Assets>
+		<!-- SSMS 19+ (64-bit) -->
+		<InstallationTarget Version="[21.0,)" Id="Microsoft.VisualStudio.Ssms">
+			<ProductArchitecture>amd64</ProductArchitecture>
+		</InstallationTarget>
+	</Installation>
+	<Dependencies>
+		<Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.8,)" />
+		<Dependency Id="Microsoft.VisualStudio.MPF.16.0" DisplayName="Visual Studio MPF 16.0" d:Source="Installed" Version="[16.0,)" />
+	</Dependencies>
+	<Prerequisites>
+		<Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[16.0,)" DisplayName="Visual Studio core editor" />
+	</Prerequisites>
+	<Assets>
+		<Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />
+	</Assets>
 </PackageManifest>