Fix grate always create Version record when no script to run.

[hoangthanh28]

Hi Erik.
This PR intends to fix the issue with the Version table. See #388
Running with docker image, looks ok so far, see the detail below:

[SqlServer]:

docker network create grate-test &&
docker run -d -e SA_PASSWORD=gs8j4AS7h87jHg \
 -e ACCEPT_EULA=Y -e MSSQL_PID=Express \
 --network grate-test --name db -p 1433:1433 \
mcr.microsoft.com/mssql/server:2019-latest

[grate docker (using my local docker build docker build -f ./installers/docker/Dockerfile -t hoangthanh28/grate:latest . ]

docker run -v ./:/db --network grate-test \
 -e APP_CONNSTRING="Server=db;Database=grate_test;User Id=sa;Password=gs8j4AS7h87jHg;TrustServerCertificate=True"  \
-e VERSION=1.0.0.1 \
hoangthanh28/grate:latest

[logs]

[output]

docker run \
    --network grate-test \
    --entrypoint /opt/mssql-tools/bin/sqlcmd \
    mcr.microsoft.com/mssql-tools \
    -S db -U sa -P gs8j4AS7h87jHg -d grate_test -Q "select * from grate.Version;"

[erikbra]

Hi, @hoangthanh28 - sorry this has taken so long. Could you please rebase this on main, so that it is easier to look through it again? I had a couple of comments, there might be more, but I've been busy making sure the "run grate as a nuget package" feature could make it

[erikbra]

OK

[erikbra]

I rebased this one on main, and cleaned it up. Thanks a lot for your contribution, @hoangthanh28