Add JSONResume theme targets & OG/Twitter meta tag support

- Makefile: Add jsonresume-all-html target to export resume in 30 themes
- Makefile: Curate list of 30 tested working JSONResume themes
- pelicanconf.py: Add extract_first_image filter for social media unfurling
- Resume: Add Queues skill category (SQS, RabbitMQ, ZMQ)

pelicanconf.py

@@ -109,7 +109,14 @@ PLUGIN_PATHS = ["pelican-plugins", "lib"]
 PLUGINS = ["random_article", "strip_toc_summary"]
 
 # register filters.
-# JINJA_FILTERS = {'linkpeek':linkpeek}
+import re
+
+def extract_first_image(content):
+    """Extract first image URL from HTML content."""
+    match = re.search(r'(?:src|href)=["\']([^"\']+\.(?:jpg|jpeg|png|gif|webp))["\']', content, re.IGNORECASE)
+    return match.group(1) if match else None
+
+JINJA_FILTERS = {'extract_first_image': extract_first_image}
 
 # register linkpeek docutils directive.
 import sys