Fix release version

[scarrazza]

There is a mistmatch between the package version (init.py) and the pyproject.yaml version.

[scarrazza]

Reopening because #62 is not using the same approach implemented in qibo, please check how we deal with the versioning in qibo's init.py file. The approach in #62 is bad because it is prone to generate inconsistencies between both versions.

Moreover, please use version 0.0.1 for the time being, given that there still points to be tested and fixed (e.g. the dev documentation is not complete).

[damarkian]

Updated init.py and modular init.py in here: b3aae21

Used version 0.0.1 in pyproject.toml, checked using poetry version