Use .rc files in TSM instead of string literals

[PankajBhojwani]

More prerequisite work for Action IDs - turns out if we add the action IDs to the actions defined in defaults.json the string ends up being too large and the compiler complains about it. Use a .rc file for defaults.json instead and also for enableColorSelection.json + userDefaults.json.

[PankajBhojwani]

For some reason the tests are unable to load the settings the new way, they throw this exception:
Caught std::exception: Exception while loading or validating Terminal settings

[DHowett]

For some reason the tests are unable to load the settings the new way, they throw this exception: Caught std::exception: Exception while loading or validating Terminal settings

Remember! Settings Tests is a separate DLL that consumes the Settings static library. It doesn't know about the .res file, just like Settings DLL didn't know.

[DHowett]

nit: make sure your PR title is short (72 characters is a great maximum) and descriptive, and that the body is up to date and complete.

[DHowett]

If you want to follow the style for my commit messages, you can remove the headings and the empty checkboxes.

[DHowett]

(and final nit: it's not instead of powershell scripts, it's instead of string literals!)

[DHowett]

/azp run

[azure-pipelines]

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