add line for COVID protocols

[maneesha]

This PR adds a variable for information about special COVID protocols. This will display on the rendered page as a section immediately after the Code of Conduct section. @sheraaronhurt let me know if this looks OK to you or if you want it displayed elsewhere instead.

When setting up the website, Instructors will add it to the website in the same way the add in location, dates, instructor names, etc.

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[maneesha]

@zkamvar I was thinking about that. Do you know if there is a way to require a value on one of the fields based on another field? (i.e. covid_protocols is required if address == 'online' or if country != 'W3')

[zkamvar]

@zkamvar I was thinking about that. Do you know if there is a way to require a value on one of the fields based on another field? (i.e. covid_protocols is required if address == 'online' or if country != 'W3')

I belive it would be an unless tag:

https://github.com/carpentries/workshop-template/blob/79c2d3bb91e108538c2e78c5d0b3bfd8b8f2ecbf/index.md?plain=1#L66-L70

for example:

 {% if page.address != "online" %}
 {% unless site.covid_policy %} 
 <div class="alert alert-warning"> 
 It looks like you are setting up an in-person workshop but you haven't specified the COVID policy in the <code>_config.yml</code> file...
 </div> 
 {% endunless %}
COVID POLICY
 <p>{{ page.covid_policy }}</p>
 {% endif %}

[sheraaronhurt]

@maneesha this LGTM. I would agree with @zkamvar and ask that there be some type of requirement if possible.