Refactor product releases writing

Create a common function to write resulting JSON files to the releases directory.
It makes this task simpler to read and maintain, while making it modifiable at a central point in the future.
One example of such modification could be the sorting of the versions in a uniform way for all the scripts.

src/ros.py

@@ -1,5 +1,4 @@
 import datetime
-import json
 import re
 from bs4 import BeautifulSoup
 from common import endoflife
@@ -8,11 +7,11 @@ URL = "https://wiki.ros.org/Distributions"
 # https://regex101.com/r/c1ribd/1
 regex = r"^ROS (?P<name>(\w| )+)"
 
-versions = {}
-
 print("::group::ros")
 response = endoflife.fetch_url(URL)
 soup = BeautifulSoup(response, features="html5lib")
+
+versions = {}
 for tr in soup.findAll("tr"):
     td_list = tr.findAll("td")
     if len(td_list) > 0:
@@ -32,7 +31,6 @@ for tr in soup.findAll("tr"):
             abs_date = date.strftime("%Y-%m-%d")
             versions[version] = abs_date
             print("%s: %s" % (version, abs_date))
-print("::endgroup::")
 
-with open("releases/ros.json", "w") as f:
-    f.write(json.dumps(versions, indent=2))
+endoflife.write_releases('ros', versions)
+print("::endgroup::")