Complete the definition of the Equipment model and associated taxonomy models

[duci9y]

Taxonomy types would include all models necessary to fully specify the hierarchy in which equipment is categorized and/or tagged and/or arranged.

Communication about this issue is important and should happen in the #private-tutv-backend Slack channel as soon as possible.

[Frama-99]

The following needs to get done:

• get, post, delete on equipment items
• get, post, delete on equipment types
• get, post, delete on equipment categories
• get, post, delete on equipment requests
• get equipment availability given a timeframe and a piece of equipment
• sign out equipment given an equipment request ID
• return equipment given an equipment request ID

Bonus:

• Modify equipment request given equipment request ID
• Modify equipment item
• Modify equipment type