This commit adds a `--runtime` option to the `dotnet test` command for
consistency with other commands.
The option does not have a short form of `-r`, however, because `dotnet test`
already uses the short form for another option (results directory).
Fixes#9583.
This commit attempts to make the command line help user experience for `dotnet`
more consistent for all of the built-in SDK commands.
The following has been changed:
* Organized the top-level help into a section detailing how to run .NET
applications and a section on running SDK commands.
* Sorted the SDK commands by name (previous ordering was undefined).
* Removed `--verbosity` from the "common options section" since it is not a
top-level option, nor is it common to all commands.
* Added missing parameter names for parameterized options (especially for the
`dotnet tool` subcommands).
* Fixed the localization of parameter names for parameterized options.
* Added missing `PROJECT` parameter to a few commands.
* Fixed the localization of the build command's `PROJECT` parameter description.
* Fixed the confusing descriptions for the `--framework`, `--configuration`,
and `--runtime` options that were being shared between different commands.
* Fixed the "unknown command" error for `dotnet help <command>` to show in red.
* Deleted .resx for `dotnet msbuild` that is no longer used.
* Change the option descriptions to be more consistent in their grammatical
structure.
* Removed extra blank line from end of help output.
Fixes#7431.
Fixes#9230.
Fixes#9165.
