Ecoinvent-migrate

* Add missing `pandas` dependency

* Examine technosphere changes in release data to autogenerate more changes and log cases where manual fixes are necessary
* Remove dependency on any Brightway libraries
* Compatibility with ecoinvent 3.11 change report file format
* Support multiple manual patch file formats
* Move to `src` layout
* Fix compatibility problem with new `randonneur` versions

* Don't assume `delete` section present in biosphere mappings

* Use `conversion_factor` instead of `allocation` for `replace` transformations

* Add biosphere changes not listed in change report
* Add additional patches for technosphere

* Patch missing ecoinvent migrations