add msi for a dev package

[tjanczuk]

This is to add an MSI for a "development package" for iisnode. It will contain all flavors of iisnode with corresponding IIS schema and PDB files for debugging, for both debug and release builds.

This is an x86 installer that installs to %programfiles%\iisnode-dev on x86 machines and %programfiles(x86)%\iisnode-dev on x64 machines.

All it does it deploy files. IIS configuration remains unaffected. The MSI does not enforce have any dependencies.

This is the exact list of files:

iisnode-dev\debug\x64\iisnode.dll
iisnode-dev\debug\x64\iisnode.pdb
iisnode-dev\debug\x64\iisnode_schema_x64.xml
iisnode-dev\debug\x64\iisnode_schema_x64_wow.xml
iisnode-dev\debug\x64\interceptor.js
iisnode-dev\debug\x86\iisnode.dll
iisnode-dev\debug\x86\iisnode.pdb
iisnode-dev\debug\x86\iisnode_schema.xml
iisnode-dev\debug\x86\interceptor.js
iisnode-dev\release\x64\iisnode.dll
iisnode-dev\release\x64\iisnode.pdb
iisnode-dev\release\x64\iisnode_schema_x64.xml
iisnode-dev\release\x64\iisnode_schema_x64_wow.xml
iisnode-dev\release\x64\interceptor.js
iisnode-dev\release\x86\iisnode.dll
iisnode-dev\release\x86\iisnode.pdb
iisnode-dev\release\x86\iisnode_schema.xml
iisnode-dev\release\x86\interceptor.js

[tjanczuk]

Building the MSI is not part of the overall iisnode.sln. The MSI must be built directly after all flavors of iisnode have been built before, i.e. (Debug, Release) * (x86, x64)