Due to some imports that weren't wrapped in try/except inside of `__init__.py`, the `setup.py` file was unable to function due to an ImportError raised
when trying to import the VERSION variable.

To ensure robustness when importing `privex.helpers`, all module imports inside of `privex/helpers/__init__.py` - apart from `privex.helpers.common`,
are now wrapped inside of a try/except block, ensuring at least *partial* functionality if any module fails to load for whatever reason.

Additionally, to prevent any risk of `setup.py` failing to function when no dependencies are installed, `VERSION` has been relocated to `privex.helpers.version.VERSION`,
however, `__init__.py` imports `version.VERSION` and makes it available as `VERSION`, as to not break compatibility with any existing code / systems which expect the
package version to be found inside of `__init__.py`

The `setup.py` file now only imports from privex.helpers: `extras_require` from `privex.helpers.setuppy.common` (no extra dependencies), and `VERSION` from `privex.helpers.version`

Both `privex.helpers.setuppy.commands` and `privex.helpers.settings` are still imported inside of `setup.py`, but kept within a safe try/except block, as they're not essential for
setup.py to function