Help: Describe the type of Visual Studio projects that can be generated

Issue: #17956
See-also: https://stackoverflow.com/questions/51647437/use-cmake-to-generate-visual-studio-python-projects/51666488

Help/generator/Visual Studio 10 2010.rst

@@ -18,6 +18,12 @@ a target platform name optionally at the end of this generator name:
 For compatibility with CMake versions prior to 3.0, one may specify this
 generator using the name ``Visual Studio 10`` without the year component.
 
+Project Types
+^^^^^^^^^^^^^
+
+Only Visual C++ and C# projects may be generated.  Other types of
+projects (Database, Website, etc.) are not supported.
+
 Toolset Selection
 ^^^^^^^^^^^^^^^^^
 

Help/generator/Visual Studio 11 2012.rst

@@ -21,6 +21,12 @@ a target platform name optionally at the end of this generator name:
 For compatibility with CMake versions prior to 3.0, one may specify this
 generator using the name "Visual Studio 11" without the year component.
 
+Project Types
+^^^^^^^^^^^^^
+
+Only Visual C++ and C# projects may be generated.  Other types of
+projects (JavaScript, Database, Website, etc.) are not supported.
+
 Toolset Selection
 ^^^^^^^^^^^^^^^^^
 

Help/generator/Visual Studio 12 2013.rst

@@ -18,6 +18,12 @@ a target platform name optionally at the end of this generator name:
 For compatibility with CMake versions prior to 3.0, one may specify this
 generator using the name "Visual Studio 12" without the year component.
 
+Project Types
+^^^^^^^^^^^^^
+
+Only Visual C++ and C# projects may be generated.  Other types of
+projects (JavaScript, Powershell, Python, etc.) are not supported.
+
 Toolset Selection
 ^^^^^^^^^^^^^^^^^
 

Help/generator/Visual Studio 14 2015.rst

@@ -15,6 +15,12 @@ a target platform name optionally at the end of this generator name:
 ``Visual Studio 14 2015 ARM``
   Specify target platform ``ARM``.
 
+Project Types
+^^^^^^^^^^^^^
+
+Only Visual C++ and C# projects may be generated.  Other types of
+projects (JavaScript, Powershell, Python, etc.) are not supported.
+
 Toolset Selection
 ^^^^^^^^^^^^^^^^^
 

Help/generator/Visual Studio 15 2017.rst

@@ -15,6 +15,12 @@ a target platform name optionally at the end of this generator name:
 ``Visual Studio 15 2017 ARM``
   Specify target platform ``ARM``.
 
+Project Types
+^^^^^^^^^^^^^
+
+Only Visual C++ and C# projects may be generated.  Other types of
+projects (JavaScript, Powershell, Python, etc.) are not supported.
+
 Instance Selection
 ^^^^^^^^^^^^^^^^^^