LCA Toolkit clean up discussion notes

#### Description:

Notes from a discussion with @mchaf @shivanierambaran @IsakNaslundBh @kayleighhoude regarding toolkit cleanup during our PR closure event. Notes below should be ticked off as addressed in the coming sprints/milestones and this issue should be closed when all points have been discussed.

#### Notes from the discussion
- [ ] Refactor of EPD class (full sprint, planning session required)
- [ ] Align project scope fields based on desired database host metadata requirements
- [ ] Raw material LCA composition is used as an input often in lieu of EPD. Similar to TM65 magic (@kayleighhoude @IsakNaslundBh)
- [ ] https://github.com/BHoM/LifeCycleAssessment_Toolkit/issues/204
- [ ] https://github.com/BHoM/LifeCycleAssessment_Toolkit/issues/162
- [ ] Strategy for reporting in general. How do we want to display and store results for data visualisations downstream (planning session required)
- [ ] Documentation refresh
- [ ] Sample scripts added to OS repo and all documentation used externally (@mchaf)
- [ ] Description refresh for all methods and updation with the API
- [ ] https://github.com/BHoM/LifeCycleAssessment_Toolkit/issues/252 (@kayleighhoude to check)
- [ ] https://github.com/BHoM/LifeCycleAssessment_Toolkit/issues/286 (@IsakNaslundBh to check)

#### Other outcomes from the discussion
- [x] Moved this issue https://github.com/BHoM/BHoM/issues/1464 (FYI @FraserGreenroyd )

No files, tests, or entry points are named. Start by reviewing linked issues 204, 162, 252, and 286 alongside the checklist, then identify which items are still open; done means all discussion points have been addressed and the issue can be closed.

Written by the indexing model from the issue text.