[NEW] A barebone of the Ext.NET.SVG project: a class library with the logic to export SVG to images.

- The static Exporter class contains the methods to convert an SVG string to images.
- The Handler class implements IHttpHandler and can be used in a Web application if add a dll and configure in Web.config.

[NEW] A barebone of the svg.ext.net Web application: an endpoint to export Ext.NET Charts to images using the Ext.NET.SVG.Handler class to operate with POST requests (configured in Web.config).

- The Handler deals with POST requests only. So, if open http://svg.ext.net directly from a browser, it shows a welcome page.

- If an error occurs while exporting, it redirects to the Help.aspx page which shows an error message. For example, http://svg.ext.net/Help.aspx?errorMessage=The%20%22image/jpegg%22%20type%20is%20not%20supported.%20The%20supported%20types%20are%20%22image/png%22%20and%20%22image/jpeg%22.

- A test sample using this new endpoint is here: http://test.ext.net/Export_Chart_Test.aspx