Add alert about CAS deprecation

[gewarren]

Contributes to dotnet/docs#29152.

This PR includes all the APIs that were obsoleted with SYSLIB0003. We still need to add the alert to APIs that weren't ported to .NET Core.

[opbld34]

Docs Build status updates of commit 2a2a221:

✅ Validation status: passed

File	Status	Preview URL	Details
includes/cas-deprecated.md	✅Succeeded	View
xml/System.Configuration/ConfigurationPermission.xml	✅Succeeded	View
xml/System.Configuration/ConfigurationPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.Common/DBDataPermission.xml	✅Succeeded	View
xml/System.Data.Common/DBDataPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.Odbc/OdbcPermission.xml	✅Succeeded	View
xml/System.Data.Odbc/OdbcPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.OleDb/OleDbPermission.xml	✅Succeeded	View
xml/System.Data.OleDb/OleDbPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.OracleClient/OraclePermission.xml	✅Succeeded	View
xml/System.Data.OracleClient/OraclePermissionAttribute.xml	✅Succeeded	View
xml/System.Data.SqlClient/SqlClientPermission.xml	✅Succeeded	View
xml/System.Data.SqlClient/SqlClientPermissionAttribute.xml	✅Succeeded	View
xml/System.Diagnostics/EventLogPermission.xml	✅Succeeded	View
xml/System.Diagnostics/EventLogPermissionAttribute.xml	✅Succeeded	View
xml/System.Diagnostics/PerformanceCounterPermission.xml	✅Succeeded	View
xml/System.Diagnostics/PerformanceCounterPermissionAttribute.xml	✅Succeeded	View
xml/System.DirectoryServices/DirectoryServicesPermission.xml	✅Succeeded	View
xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml	✅Succeeded	View
xml/System.Drawing.Printing/PrintingPermission.xml	✅Succeeded	View
xml/System.Drawing.Printing/PrintingPermissionAttribute.xml	✅Succeeded	View
xml/System.Net.Mail/SmtpPermission.xml	✅Succeeded	View
xml/System.Net.Mail/SmtpPermissionAttribute.xml	✅Succeeded	View
xml/System.Net.NetworkInformation/NetworkInformationPermission.xml	✅Succeeded	View
xml/System.Net.NetworkInformation/NetworkInformationPermissionAttribute.xml	✅Succeeded	View

This comment lists only the first 25 files in the pull request.
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[tdykstra]

LGTM, one comment.

[tdykstra]

This alert and similar instances of "no longer supported" appear in a lot of places, but they seem to be redundant after the new include and could be deleted.

[opbld34]

Docs Build status updates of commit 7f4e574:

✅ Validation status: passed

File	Status	Preview URL	Details
includes/cas-deprecated.md	✅Succeeded	View
xml/System.Configuration/ConfigurationPermission.xml	✅Succeeded	View
xml/System.Configuration/ConfigurationPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.Common/DBDataPermission.xml	✅Succeeded	View
xml/System.Data.Common/DBDataPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.Odbc/OdbcPermission.xml	✅Succeeded	View
xml/System.Data.Odbc/OdbcPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.OleDb/OleDbPermission.xml	✅Succeeded	View
xml/System.Data.OleDb/OleDbPermissionAttribute.xml	✅Succeeded	View
xml/System.Data.OracleClient/OraclePermission.xml	✅Succeeded	View
xml/System.Data.OracleClient/OraclePermissionAttribute.xml	✅Succeeded	View
xml/System.Data.SqlClient/SqlClientPermission.xml	✅Succeeded	View
xml/System.Data.SqlClient/SqlClientPermissionAttribute.xml	✅Succeeded	View
xml/System.Diagnostics/EventLogPermission.xml	✅Succeeded	View
xml/System.Diagnostics/EventLogPermissionAttribute.xml	✅Succeeded	View
xml/System.Diagnostics/PerformanceCounterPermission.xml	✅Succeeded	View
xml/System.Diagnostics/PerformanceCounterPermissionAttribute.xml	✅Succeeded	View
xml/System.DirectoryServices/DirectoryServicesPermission.xml	✅Succeeded	View
xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml	✅Succeeded	View
xml/System.Drawing.Printing/PrintingPermission.xml	✅Succeeded	View
xml/System.Drawing.Printing/PrintingPermissionAttribute.xml	✅Succeeded	View
xml/System.Net.Mail/SmtpPermission.xml	✅Succeeded	View
xml/System.Net.Mail/SmtpPermissionAttribute.xml	✅Succeeded	View
xml/System.Net.NetworkInformation/NetworkInformationPermission.xml	✅Succeeded	View
xml/System.Net.NetworkInformation/NetworkInformationPermissionAttribute.xml	✅Succeeded	View

This comment lists only the first 25 files in the pull request.
For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel