Hcclient

- Added `/exec`, which executes python code in the context of the client, providing functionality similar to a browser's dev console
- Manage commands in a separate submodule as individual functions, making it easier to add/remove/modify commands with hooks
- Increased verbosity during start up
- Updated dependencies:
- websocket-client: `1.6.4 -> 1.7.0`
- python-socks: `2.4.3 -> 2.4.4`
- prompt-toolkit: `3.0.41 -> 3.0.43`

- Added `no_linkify` option to disable linkifying of non-markdown formatted urls
- Removed traceback printing on LaTeX simplifying failure

- Made SSL cert verification opt-out with `--ssl-no-verify`

- Fix regression from restructure that broke hooks

- Made LaTeX related dependencies optional

- Project restructuring version bump, no other changes

*Starting from this release, binary and container images will not be provided. Wheels are the only supported distribution format.*