feat(main.py): add support for downloading Marp CLI tool from GitHub repository to ensure availability of necessary files for program execution

feat(marpdownloader.py): implement function to download Marp CLI tool from GitHub repository based on specified username, repository, and file extension

utils/marpdownloader.py

@@ -0,0 +1,49 @@
+import requests
+import os
+import zipfile
+from settings import settings
+
+def get_latest_release_download_url(username, repository, file_extension):
+    api_url = f"https://api.github.com/repos/{username}/{repository}/releases/latest"
+    response = requests.get(api_url)
+
+    if response.status_code == 200:
+        data = response.json()
+        for asset in data.get("assets", []):
+            download_url = asset.get("browser_download_url")
+            if download_url and download_url.endswith(file_extension):
+                return download_url
+    else:
+        print(f"Failed to fetch latest release information. Status code: {response.status_code}")
+
+    return None
+
+def download_file(url, file_name):
+    response = requests.get(url, stream=True)
+    with open(file_name, 'wb') as file:
+        for chunk in response.iter_content(chunk_size=8192):
+            file.write(chunk)
+
+# Replace these variables with the desired GitHub repository information
+def download_marp_cli(force_download=False):
+    github_username = "marp-team"
+    repo_name = "marp-cli"
+    file_extension = "win.zip"  # Replace this with your desired file extension (e.g., "win.zip")
+
+    download_url = get_latest_release_download_url(github_username, repo_name, file_extension)
+    if download_url:
+        file_name = download_url.split("/")[-1]
+        download_version = file_name.split("-")[2]
+        current_version = settings.marp_version
+        if download_version != current_version or force_download:
+            download_file(download_url, file_name)
+            with zipfile.ZipFile(file_name, 'r') as zip_ref:
+                zip_ref.extractall()
+            settings.set_setting("marp_version", download_version)
+            os.remove(file_name)
+
+    else:
+        raise Exception("Failed to get the download URL for the latest release.")
+    
+if __name__ == "__main__":
+    download_marp_cli(force_download=True)