[release_table] Support JavaScript rendering (#327)

Based on the render_javascript option.

src/release_table.py

@@ -13,9 +13,13 @@ from liquid import Template
 This script works based on a definition provided in the product's frontmatter to locate the table and extract the
 necessary information. Available configuration options are:
 
+- selector (mandatory, no default): A CSS selector used to locate one or more tables in the page.
 - selector (mandatory, no default): A CSS selector used to locate one or more tables in the page.
 - header_selector (mandatory, default = thead tr): A CSS selector used to locate the table's header row.
 - rows_selector (mandatory, default = tbody tr): A CSS selector used to locate the table's rows.
+- render_javascript (optional, default = false): A boolean value indicating whether to render JavaScript on the page.
+- ignore_empty_releases (optional, default = false): A boolean value indicating whether to ignore releases with no
+  fields except the name.
 - fields: A dictionary that maps release fields to the table's columns. Field definition include:
     - column (mandatory): The name of the column in the table. This is case-insensitive.
     - type (mandatory, default = string): The type of the field. Supported types are:
@@ -117,9 +121,7 @@ p_filter = sys.argv[1] if len(sys.argv) > 1 else None
 m_filter = sys.argv[2] if len(sys.argv) > 2 else None
 for config in endoflife.list_configs(p_filter, METHOD, m_filter):
     with releasedata.ProductData(config.product) as product_data:
-        response = http.fetch_url(config.url)
-        soup = BeautifulSoup(response.text, features="html5lib")
-
+        render_javascript = config.data.get("render_javascript", False)
         ignore_empty_releases = config.data.get("ignore_empty_releases", False)
         header_row_selector = config.data.get("header_selector", "thead tr")
         rows_selector = config.data.get("rows_selector", "tbody tr")
@@ -127,6 +129,9 @@ for config in endoflife.list_configs(p_filter, METHOD, m_filter):
         release_cycle_field = Field("releaseCycle", config.data["fields"].pop("releaseCycle"))
         fields = [Field(name, definition) for name, definition in config.data["fields"].items()]
 
+        response_text = http.fetch_javascript_url(config.url) if render_javascript else http.fetch_url(config.url).text
+        soup = BeautifulSoup(response_text, features="html5lib")
+
         for table in soup.select(config.data["selector"]):
             header_row = table.select_one(header_row_selector)
             if not header_row: