Avoid recompiling every test that uses local Vm

[DaniPopes]

Component

Forge

Describe the feature you would like

many tests in forge now use

    prj.wipe_contracts();
    prj.insert_ds_test();
    prj.insert_vm();
    prj.clear();

this clears the cache of the pre-compiled test project, which ruins the purpose of the forgetest_init macro, as well as making tests depend on ds-test which we have removed from forge-std long ago

we can surgically replace the forge-std Vm with the local one to have access to all the cheatcodes, or some other way so that we don't have to do this

cc @grandizzy

Additional context

No response

[grandizzy]

I think this can be done without any test related code structure change but following the rule of tests for new cheatcodes added as contracts inside testdata/default/cheats where they import import "cheats/Vm.sol";, will take a look into cleaning this