Fix publishing in directories with spaces

[drogus]

Description of Changes

The publish subcommand calls the build subcommand internally. The build's implementation used to split the arguments by space, which breaks when a directory contains a space.

API and ABI breaking changes

Expected complexity level and risk

1

Testing

• Tested locally
• Added a test

[bfops]

The test seems to have failed?

failures:

---- subcommands::build::tests::exec_with_argstring_keeps_module_path_with_spaces_as_single_argv_item stdout ----

thread 'subcommands::build::tests::exec_with_argstring_keeps_module_path_with_spaces_as_single_argv_item' (83303) panicked at crates/cli/src/subcommands/build.rs:142:9:
assertion `left == right` failed
  left: "SpacetimeDB Projects/My SpacetimeDB App/spacetimedb"
 right: "Projects/Experiments/Simple Inventory/spacetimedb"
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


failures:
    subcommands::build::tests::exec_with_argstring_keeps_module_path_with_spaces_as_single_argv_item