add chaindd column

rsshub/spiders/chaindd/column.py

@@ -0,0 +1,24 @@
+from rsshub.utils import fetch
+
+domain = 'https://www.chaindd.com'
+
+
+def parse(post):
+    item = {}
+    item['title'] = post.css('a::text').extract_first()
+    item['description'] = post.css('p::text').extract_first()
+    item['link'] = f"{domain}{post.css('a::attr(href)').extract_first()}"
+    item['author'] = post.css('a.name::text').extract_first()
+    return item
+
+
+def ctx(category=''):
+    tree = fetch(f"{domain}/column/{category}")
+    posts = tree.css('li .cont')
+    return {
+        'title': f'链得得栏目{category}最新文章',
+        'link': f'{domain}/column/{category}',
+        'description': f'链得得栏目{category}最新文章',
+        'author': 'hillerliao',
+        'items': list(map(parse, posts)) 
+    }