[Feature] Server pagination implementation (#243)

## Major Changes
- Implement a REST style API app in epapi
- Currently implements a GET method for all entity types in the browse menu (both package level and global)
- Provides paginated results per default with query style filtering for reviewed vs unreviewed.
- Provides new paginated templates with thin wrappers per entity types for easier maintainability
- Implements e2e tests for the API

## Minor changes
- Added more comprehensive gitignore to cover coverage reports and other test/node.js etc. data.
- Add additional CI file for API tests that only gets triggered on API relevant changes.

## ⚠️ Currently only works with session-based authentication. Token based will be added in new PR.

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Co-authored-by: jebus <lorsbach@envipath.com>
Reviewed-on: enviPath/enviPy#243
Co-authored-by: Tobias O <tobias.olenyi@envipath.com>
Co-committed-by: Tobias O <tobias.olenyi@envipath.com>

templates/collections/packages_paginated.html

@@ -0,0 +1,95 @@
+{% extends "collections/paginated_base.html" %}
+
+{% block page_title %}Packages{% endblock %}
+
+{% block action_button %}
+  {% if meta.can_edit %}
+    <div class="flex items-center gap-2">
+      <button
+        type="button"
+        class="btn btn-primary btn-sm"
+        id="new-package-button"
+        onclick="document.getElementById('new_package_modal').showModal(); return false;"
+      >
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="24"
+          height="24"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          stroke-width="2"
+          stroke-linecap="round"
+          stroke-linejoin="round"
+          class="lucide lucide-folder-plus-icon lucide-folder-plus"
+        >
+          <path d="M12 10v6" />
+          <path d="M9 13h6" />
+          <path
+            d="M20 20a2 2 0 0 0 2-2V8a2 2 0 0 0-2-2h-7.9a2 2 0 0 1-1.69-.9L9.6 3.9A2 2 0 0 0 7.93 3H4a2 2 0 0 0-2 2v13a2 2 0 0 0 2 2Z"
+          />
+        </svg>
+      </button>
+      <div class="dropdown dropdown-end">
+        <div tabindex="0" role="button" class="btn btn-sm">
+          Import
+          <svg
+            xmlns="http://www.w3.org/2000/svg"
+            width="16"
+            height="16"
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            stroke-width="2"
+            stroke-linecap="round"
+            stroke-linejoin="round"
+            class="lucide lucide-chevron-down ml-1"
+          >
+            <path d="m6 9 6 6 6-6" />
+          </svg>
+        </div>
+        <ul
+          tabindex="-1"
+          class="dropdown-content menu bg-base-100 rounded-box z-50 w-56 p-2"
+        >
+          <li>
+            <a
+              role="button"
+              onclick="document.getElementById('import_package_modal').showModal(); return false;"
+            >
+              Import Package from JSON
+            </a>
+          </li>
+          <li>
+            <a
+              role="button"
+              onclick="document.getElementById('import_legacy_package_modal').showModal(); return false;"
+            >
+              Import Package from legacy JSON
+            </a>
+          </li>
+        </ul>
+      </div>
+    </div>
+  {% endif %}
+{% endblock action_button %}
+
+{% block action_modals %}
+  {% include "modals/collections/new_package_modal.html" %}
+  {% include "modals/collections/import_package_modal.html" %}
+  {% include "modals/collections/import_legacy_package_modal.html" %}
+{% endblock action_modals %}
+
+{% block description %}
+  <p>
+    A package contains pathways, rules, etc. and can reflect specific
+    experimental conditions.
+  </p>
+  <a
+    target="_blank"
+    href="https://wiki.envipath.org/index.php/packages"
+    class="link link-primary"
+  >
+    Learn more &gt;&gt;
+  </a>
+{% endblock description %}