Updates the rust version used in the devcontainer to 1.71 (wich matches the current) MSRV.
Adds test.sh which will run all test that run as part of the test.yml from the github action locally. This eases development as one can check for failures locally.
test.shwhich will run all test that run as part of thetest.ymlfrom the github action locally. This eases development as one can check for failures locally.