Add a simple_tag for views to render a list of values

[MyPyDavid]

This tag should return a readable string from a list of Values in a View template.
The default keyword arguments for this simple tag are separator sep = ',' and the second to last separator sep_last = ', and'.
The name of the tag is currently render_custom_inline_list.

For example for a list of possible values (like in a optionset) A, B, C, D it should return:

A, B, C, and D
A, B, and C
A and B
A

In the View for example:

<p> Im Projekt entstehen Daten
{% for dataset in datasets %}
    {% if forloop.last and not forloop.first %}und {% endif %}
    im Bereich <i>{{ dataset.value }}</i> durch
    {% get_set_values dataset 'project/dataset/creation_methods' as texts %}
    {% render_custom_inline_list values=texts sep=';' sep_last='und' %}
{% endfor %}
</p>

Co-authored-by: @jwindeck

Description

Related issue: #ISSUE_NUMBER

Motivation and Context

How has this been tested?

Screenshots (if appropriate)

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

Checklist

• I have read the contributor guide.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[Zack-83]

addresses #964

[MyPyDavid]

thanks, looks much better with the separator_two