Add code of conduct

[kabilar]

• [ ] datajoint-elements
• [x] element-lab
• [x] element-animal
• [x] element-session
• [x] element-event
• [ ] element-array-ephys
• [ ] element-calcium-imaging
• [ ] element-miniscope
• [ ] element-deeplabcut
• [ ] element-electrode-localization
• [ ] element-facemap
• [ ] element-visual-stimulus
• [x] element-interface
• [ ] element-optogenetics
• [x] workflow-session
• [x] workflow-array-ephys
• [ ] workflow-calcium-imaging
• [x] workflow-miniscope
• [ ] workflow-deeplabcut
• [ ] workflow-facemap

[CBroz1]

@dimitri-yatsenko suggested revising our strategy in favor of linking to a central code of conduct doc

[dimitri-yatsenko]

@CBroz1 I just noted how we handle CONTRIBUTING. I guess the difference is that our contribution guidelines are a living document that may evolve, so keeping one copy is important.

[kabilar]

Closing as keeping all of the repos updated is not a priority.