EEEMCal new inner and outer supports

[veprbl]

Briefly, what does this PR introduce?

Updates:

• Change thickness of outer support volume
• Removing steel from filling gaps between cells and outer support
• New inner support collar
• Remove copper between inner support and cells
• Adjust cell width
• Adjust intercell wrappers thicknesses

What kind of change does this PR introduce?

• [ ] Bug fix (issue #__)
• [x] New feature (issue #__)
• [ ] Documentation update
• [ ] Other: __

Please check if this PR fulfills the following:

• [ ] Tests for the changes have been added
• [ ] Documentation has been added / updated
• [ ] Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

Does this PR change default behavior?