Change package name back to matrix-sygnal

[devonh]

The package name was accidentally changed in #374
This PR changes it back.

[devonh]

Since we are now using poetry, poetry requires the top level package folder to match the package name.
So in order to rename the package to matrix-sygnal, I had to move the sygnal directory to matrix_sygnal. This results in a change to how sygnal is run.

With this change, you need to run sygnal using:
python -m matrix_sygnal.sygnal

This could be even more of a footgun than having a new package name. (Having a new package name of sygnal means existing installs could end up with multiple copies of Sygnal in a virtualenv since the old package name was matrix-sygnal and doesn't conflict with the current name)

[devonh]

Since we are now using poetry, poetry requires the top level package folder to match the package name. So in order to rename the package to matrix-sygnal, I had to move the sygnal directory to matrix_sygnal. This results in a change to how sygnal is run.

With this change, you need to run sygnal using: python -m matrix_sygnal.sygnal

This could be even more of a footgun than having a new package name. (Having a new package name of sygnal means existing installs could end up with multiple copies of Sygnal in a virtualenv since the old package name was matrix-sygnal and doesn't conflict with the current name)

This has been resolved & is no longer true.
You can now continue to run using python -m sygnal.sygnal