feat: App utilities gRPC services

[hpohekar]

closes #3553

[seanpearsonuk]

Having difficulty finding GitHub comment after email notifications. In brief, I agree with this, thanks:
"
@seanpearsonuk @hpohekar FluentVersion doesn't support the patch version field. Also, FluentVersion is restricted to only few version numbers and won't work generally if this module is reused outside PyFluent.

I think it is better of simply return a tuple from this method.
"

[hpohekar]

Having difficulty finding GitHub comment after email notifications. In brief, I agree with this, thanks: " @seanpearsonuk @hpohekar FluentVersion doesn't support the patch version field. Also, FluentVersion is restricted to only few version numbers and won't work generally if this module is reused outside PyFluent.

I think it is better of simply return a tuple from this method. "

@seanpearsonuk We have reverted it to the original state. i.e. return f"{response.major}.{response.minor}.{response.patch}"