Add context scope base code and use case context scope plugin
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3568673. -->
Reported by: [kristen pol](https://www.drupal.org/user/8389)
Related to !65 !70
>>>
<p>[Tracker]<br>
<strong>Update Summary: </strong>[One-line status update for stakeholders]<br>
<strong>Check-in Date: </strong>MM/DD/YYYY<br>
<strong>Blocked by: </strong>[#XXXXXX] (New issues on new lines)<br>
<strong>Additional Collaborators: </strong> @username1, @username2<br>
<em>Metadata is used by the <a href="https://www.drupalstarforge.ai/" title="AI Tracker">AI Tracker.</a> Docs and additional fields <a href="https://www.drupalstarforge.ai/ai-dashboard/docs" title="AI Issue Tracker Documentation">here</a>.</em><br>
[/Tracker]</p>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Parent: <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/ai_context/issues/3564706" title="Status: Closed (fixed)">#3564706: [META] Context Scope feature</a></span></p>
<p>Many factors can be created, so this is just focused on getting the foundation in place along with one factor (application).</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Create pluggable factors system with one plugin to start</p>
<h3 id="summary-remaining-tasks">Target date or deadline</h3>
<p>January 2026</p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<ul>
<li>Create code</li>
<li>Review and test</li>
</ul>
<h3 id="summary-ai-usage">AI usage (if applicable)</h3>
<p>[ ] AI Assisted Issue<br>
This issue was generated with AI assistance, but was reviewed and refined by the creator.</p>
<p>[ ] AI Assisted Code<br>
This code was mainly generated by a human, with AI autocompleting or parts AI generated, but under full human supervision.</p>
<p>[x] AI Generated Code<br>
This code was mainly generated by an AI with human guidance, and reviewed, tested, and refined by a human.</p>
<p>[ ] Vibe Coded<br>
This code was generated by an AI and has only been functionally tested.</p>
> Related issue: [Issue #3564706](https://www.drupal.org/node/3564706)
issue