feat(inlet): add low-latency chunk pulls

feat(outlet): add transport_flags for synchronous zero-copy mode

Expose the lsl_transport_options_t flags (transp_default,
transp_bufsize_samples, transp_bufsize_thousandths, transp_sync_blocking)
and a transport_flags argument on StreamOutlet, routed through
lsl_create_outlet_ex. transp_sync_blocking enables the new synchronous
(zero-copy) outlet mode (sccn/liblsl#256) for high-bandwidth streams.
Default behavior is unchanged (async via lsl_create_outlet).

Merge pull request #110 from labstreaminglayer/set_config

Add new methods set_config_filename and set_config_content

Merge pull request #109 from labstreaminglayer/verify_whl

And step to verify wheels

Merge pull request #108 from labstreaminglayer/bundle_libs

Update to liblsl 1.17.4 and bundle libs on more targets

Update numpy dep

Update pyproject.toml to attempt to fix bug again

Update publish-to-pypi.yml

Allow per-sample timestamp vector in push_chunk

Bump liblsl version and switch to GitHub Actions