docs(available_fix/debian_cve_tracker): Add comprehensive docstrings

* fixes #4540

* docs: Add docstrings for VEXGenerate class and methods

Added detailed docstrings to `VEXGenerate` class, including description
for class attributes, methods, and parameters. This enhances readability
and provides clear guidance.

* docs(available_fix/debian_cve_tracker): add docstrings

fixes #4540

cve_bin_tool/available_fix/debian_cve_tracker.py

@@ -33,7 +33,27 @@
 
 
 class DebianCVETracker:
+    """
+    A class for tracking CVEs (Common Vulnerabilities and Exposures) for Debian-based distributions.
+
+    This class is designed to monitor CVEs specific to a given Debian distribution,
+    taking into account the distribution name, codename, and whether the package is a backport.
+
+    Attributes:
+        distro_name (str): The name of the Debian-based distribution (e.g., "Debian", "Ubuntu").
+        distro_codename (str): The codename of the distribution release (e.g., "buster", "focal").
+        is_backport (bool): Flag indicating if the package is a backport.
+    """
+
     def __init__(self, distro_name: str, distro_codename: str, is_backport: bool):
+        """
+        Initializes a DebianCVETracker instance with distribution information.
+
+        Parameters:
+            distro_name (str): The name of the Debian-based distribution.
+            distro_codename (str): The codename for the distribution release.
+            is_backport (bool): Specifies if the package is a backport.
+        """
         self.distro_name = distro_name
         self.distro_codename = distro_codename
         self.is_backport = is_backport
@@ -42,7 +62,17 @@ def cve_info(
         self,
         all_cve_data: dict[ProductInfo, CVEData],
     ):
-        """Produces the Backported fixes' info"""
+        """
+        Generates information on backported CVE fixes for a given set of CVE data.
+
+        This function processes CVE data and checks for resolved vulnerabilities in
+        the Debian or Ubuntu distributions. If a fix is available or backported, it logs
+        relevant information about the fix's availability and version.
+
+        Parameters:
+            all_cve_data (dict[ProductInfo, CVEData]): Dictionary containing CVE data,
+            organized by product and version.
+        """
 
         cve_data = format_output(all_cve_data, None)
         json_data = self.get_data()
@@ -72,19 +102,43 @@ def cve_info(
                     )
 
     def get_data(self):
+        """
+        Retrieves CVE data from the Debian CVE JSON file.
+
+        This method opens and loads the Debian CVE JSON file for processing
+        vulnerability data, calling `check_json` to verify that the file is
+        up-to-date before loading.
+
+        Returns:
+            dict: Loaded JSON data from the Debian CVE JSON file.
+        """
         check_json()
         with open(DEB_CVE_JSON_PATH) as jsonfile:
             return load(jsonfile)
 
     def compute_distro(self):
+        """
+        Computes the distribution codename based on the Debian or Ubuntu release.
+
+        Maps the specified distribution codename to either Ubuntu or Debian based
+        on the provided `distro_name`.
+
+        Returns:
+            str: The mapped codename for the distribution.
+        """
         if self.distro_name == "ubuntu":
             return UBUNTU_DEBIAN_MAP[self.distro_codename]
         elif self.distro_name == "debian":
             return self.distro_codename
 
 
 def check_json():
-    """Check to update the Debian CVE JSON file"""
+    """
+    Verifies if the Debian CVE JSON file is current and triggers an update if outdated.
+
+    This function checks the modification time of the JSON file. If it's older than
+    one day, it calls `update_json` to download a fresh version.
+    """
 
     if (
         not DEB_CVE_JSON_PATH.exists()
@@ -94,7 +148,12 @@ def check_json():
 
 
 def update_json():
-    """Update the Debian CVE JSON file"""
+    """
+    Updates the Debian CVE JSON file by downloading the latest data.
+
+    This function requests the JSON data from the specified URL and saves it to
+    the `DEB_CVE_JSON_PATH` location, logging the update status.
+    """
 
     LOGGER.info("Updating Debian CVE JSON file for checking available fixes.")
     # timeout = 300s = 5min. This is a guess at a valid default