Improve error message for reserved argument names

It seems that some argument names cannot be used as build arguments. For example, trying to use an argument called `version` throws the error `Error: Argument value is not a valid boolean value.`

build.cake
```csharp
var version = Argument("version", "1.0.0");
// ...
```


I'm guessing this is caused because version is already being used to show the tool version e.g. `dotnet cake --version`, which is reasonable.

However, it's not clear from the error message above why the error occurs. I'd suggest adding a validation and display a better error message and suggest a workaround such as "_Use a different name such as `appVersion`, `packageVersion`, etc._"

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Using dotnet cake global tool v0.38.1