migration command verify installation of dotnet-ef global tool

[wintondeshong]

Problem
Recently upgraded a project to the latest dotnet SDK version. In doing so I no longer had a valid version of dotnet-ef. When running the and-cli migration command, while it does what is expected and outputs possible issues, the and-cli could reconcile it for the user.

Possible reasons for this include:

• You misspelled a built-in dotnet command.
• You intended to execute a .NET Core program, but dotnet-ef does not exist.
• You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.

Solution
When the migration command is run, do an initial check to see if the global dotnet-ef tool is installed. If not, automatically run the install...

dotnet tool install -g dotnet-ef

[brandongregoryscott]

I've run into this recently as well, good catch!