oai-pmh mods representation

[Natkeeran]

This PR provides a MODS representation. This is done by powering a twig powered OAI-PMH Record view powered by a Drupal view consisting of a given Repository Item metadata.

Composer Changes

• places a MODS template (mods.html.twig) via post-update-cmd
• patches the module, which ran into this issue https://www.drupal.org/project/rest_oai_pmh/issues/3338647

Config Changes

• rest_oai_pmh.settings - module config, sets up MODS
• views.view.oai_pmh_item_data - provides the metadata that powers the twig
• search_api.index.default_solr_index - some additional fields such as the ID needed for the above view
• views.view.oai_pmh_item_links - sets up the block needed to show the link
• context.context.display_oai_pmh_item_links - places the block

Additional Notes

• Some of the other changes to the composer are due to an issue in building isle-dc.
• When sync from isle-dc, some configs are being updated with ip or domain, I am not sure how to avoid this!

[rosiel]

We could change this to use "if node is an Islandora object" to be less dependent on the content type.

[rosiel]

unset this - it's being set by Isle-DC using code in buildkit. Islandora-Devops/isle-dc#326

[Natkeeran]

@rosiel

I've changed the context as suggested, and also cleaned up the configs that gets into the PR for this feature. It was easier to create another PR: #61.