Remove the non-MIT EULA (Extension/License.txt) from GitHub and move it into the binaries zip file and vsix build process

[sean-mcmanus]

• 1. Remove the non-MIT (restrictive) license to avoid confusion with the MIT license.
• 2. Possibly added references to the marketplace license (or to a new fwlink that has the license?) with some clarifying explanation that the binaries and vsix's hosted at Microsoft fwlinks are covered under that non-MIT license (in progress from legal).
• 3. Modify our builds to insert and install the non-MIT license text to the Extension/bin folder next to the language server binaries (like what is currently done for vsdbg). Do other debugger components need to be updated with a license as well?
• 4. Modify our builds to insert the non-MIT license into the online and offline vsix's (since the file is no longer auto-included from GitHub).
• 5. Replace the pre-release EULA with a release EULA.

[sean-mcmanus]

3 is done. Not sure what the plan is for 2 or 4 yet. 1 is on hold until we've made 3 available.

[sean-mcmanus]

Yeah, 4 needs to be done still (for the online vsix in the marketplace to show the license). Not sure about 2.

UPDATE: 4 is done.