[virtualbox-version] Add method (#480)

Track versions using https://download.virtualbox.org/virtualbox/.

Also rename virtualbox to virtualbox-releases.

---------

Co-authored-by: Marc Wrobel <marc.wrobel@gmail.com>

src/virtualbox-releases.py

@@ -12,7 +12,6 @@ config = config_from_argv()
 with ProductData(config.product) as product_data:
     html = http.fetch_html(config.url)
 
-
     for li in html.select_one("#DownloadVirtualBoxOldBuilds + ul").find_all("li"):
         li_text = li.find("a").text.strip()
 

src/virtualbox-versions.py

@@ -0,0 +1,18 @@
+from common import dates, http
+from common.releasedata import ProductData, config_from_argv
+
+"""Fetches versions from download.virtualbox.org."""
+
+config = config_from_argv()
+with ProductData(config.product) as product_data:
+    html = http.fetch_html(config.url)
+
+    for a in html.select("a"):
+        href = a["href"]
+
+        version_match = config.first_match(href)
+        if version_match:
+            version = config.render(version_match)
+            date_str = a.next_sibling.strip().split(" ")[0]
+            date = dates.parse_date(date_str)
+            product_data.declare_version(version, date)