if md_in_html is enabled, render tile captions using markdown

[ntno]

Describe the problem you'd like to have solved

I would like to be able to enter markdown for a tile caption and have it be rendered in the final tile grid

Describe the ideal solution

if the tile.caption is markdown then it should render correctly when md_in_html extension is enabled

ex:
tile.caption: Figure 8, *Misc. Project Notes*, pages 82, 83.
then 'Misc. Project Notes' should be in italics

Alternatives and current work-arounds

current workaround is to use html tags
ex:
tile.caption: Figure 8, <i>Misc. Project Notes</i>, pages 82, 83.

Additional context

[ntno]

see https://github.com/ntno/ntno.net/blob/use-mkdocs-terminal/docs/electronics/led-backpack.md?plain=1#L4
and http://ntno-net-ci-pr-107.s3-website.us-east-2.amazonaws.com/electronics/led-backpack/#process-photos

[ntno]

see https://github.com/WSOFT-Project/lantana/blob/2c2da72d109df641280306b88a3798bbc492c5da/setup.py#L24-L26
maybe need to make an extension? or add a extension definition to the theme and point to jinja2_markdown

see also:

• https://gist.github.com/glombard/7554134
• https://stackoverflow.com/questions/23320668/how-to-render-markdown-content-with-jinja2-in-a-django-project
• https://gist.github.com/tamsky/c04d422351a332d2b4e8/revisions

[ntno]

• markdown extension has testing framework: https://python-markdown.github.io/test_tools/

[ntno]

https://github.com/mondeja/mkdocs-include-markdown-plugin

[ntno]

https://github.com/mkdocs/mkdocs/blob/master/docs/dev-guide/plugins.md

[ntno]

https://github.com/byrnereese/mkdocs-markdown-filter

[ntno]

https://github.com/timvink/mkdocs-enumerate-headings-plugin

[ntno]

resolved with version 3.7.0

• updated requirements to newest version
• added "md-to-html" in plugins list

tile config

---
grid_css: ntno_img_card_grid
tiles: 
  - caption: 'Figure 8, *Misc. Project Notes*, pages 82, 83.'
    img_src: /img/led-biking-backpack/led-layout-brainstorm.png
    img_title: '' #TODO
    img_alt: '' #TODO
---

mkdocs.yml

markdown_extensions:
  - attr_list
  - meta
  - md_in_html
  - toc:
      permalink: "#"
  
plugins:
  - md-to-html
  - search
  - git-revision-date

requirements.txt

mkdocs
mkdocs-terminal>=3.7

# Python Markdown Extensions
pygments>=2.14
pymdown-extensions>=9.9

# MkDocs Plugins
mkdocs-git-revision-date-plugin
mkdocs-exclude-search

result

[ntno]

implemented new plugin which comes pre-installed with the theme. enable by adding md-to-html or terminal/md-to-html in plugins list. if plugin is not available (ie you don't enable the plugin), markup filter will be skipped during tile rendering.