* Initial credential service files
* Clean-up hostloader
* Update build scripts to build credentials archive
* Move hosting files to new assembly
* Add credentials files to MS.SqlTools.Credentials
* Remove duplicate files
* Update namespace in program.cs
* Fix test build breaks
* Update extensions visibility.
* Remove unused resource strings
* Add xproj files to SLN for appveyor builds
* Fix appveyor build break in test project
* Fix extensibility tests
* Fix various typos in latest iteration
* Add settings for Integration build
* Fix codecoverage.bat to use full pdb for new projects
* Fix bug when packing in folder with native images
* Fix typos in xproj
* Reset XLF to fix build.cmd
These are test-only changes to improve code coverage so I'll merge directly. Please review the commit and I'll pickup those changes in the next iteration.
* Add integration test batch file
* Exclude Linux and MacOS from Windows code coverage builds
* Enable code coverage for test driver e2e tests
* Use the windows only build for code coverage runs
