[visualstudio] Add automation (#199)

Automation is only for the latest 3 majors version (2022, 2019 and 2017) as there is no release history published for 2015 and below.
This is not a big deal because there was no version for those release in a very long time.

src/visualstudio.py

@@ -0,0 +1,43 @@
+import re
+from bs4 import BeautifulSoup
+from common import dates
+from common import endoflife
+
+PRODUCT = "visualstudio"
+
+# There is no build history for versions 2015 and below.
+# This is not a big deal because there was no version for those release in a very long time.
+URLS = [
+    "https://learn.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes-history",
+    "https://learn.microsoft.com/en-us/visualstudio/releases/2019/history",
+    "https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-history",
+]
+
+print(f"::group::{PRODUCT}")
+versions = {}
+
+for response in endoflife.fetch_urls(URLS):
+    soup = BeautifulSoup(response.text, features="html5lib")
+    for table in soup.find_all("table"):
+        headers = [th.get_text().strip().lower() for th in table.find_all("th")]
+        if "version" not in headers or "release date" not in headers:
+            continue
+
+        version_index = headers.index("version")
+        date_index = headers.index("release date")
+        for row in table.findAll("tr"):
+            cells = row.findAll("td")
+            if len(cells) < (max(version_index, date_index) + 1):
+                continue
+
+            version = cells[version_index].get_text().strip()
+            date = cells[date_index].get_text().strip()
+            date = dates.parse_date(date).strftime("%Y-%m-%d")
+
+            if date and version and re.match(endoflife.DEFAULT_VERSION_REGEX, version):
+                versions[version] = date
+                print(f"{version}: {date}")
+
+
+endoflife.write_releases(PRODUCT, versions)
+print("::endgroup::")