aider: Renamed the function to "validate_git_repo_url" and added logic to check if the git URL is valid.

# Context:
USER: the function that will be called should verify that the url is a valid git repo, rename the function to something appropriet.

git.py

@@ -1,3 +1,5 @@
+import giturlparse
+
 class PublicGitRepo:
     """replaces the text in the given text string with a given other text at some key positions"""
 
@@ -12,11 +14,15 @@ class PublicGitRepo:
 
     CATEGORY = "text"
     RETURN_TYPES = ("STRING",)
-    FUNCTION = "prompt_template_handler"
+    FUNCTION = "validate_git_repo_url"
 
-    def prompt_template_handler(self, text: str, replacement, key1, git_url):
+    def validate_git_repo_url(self, text: str, replacement, key1, git_url):
         """
-        >>> PublicGitRepo().prompt_template_handler("hello world", "universe", "world", "https://github.com/example/repo.git")
+        >>> PublicGitRepo().validate_git_repo_url("hello world", "universe", "world", "https://github.com/example/repo.git")
         'hello universe'
         """
+        parsed_url = giturlparse.parse(git_url)
+        if not parsed_url.valid:
+            raise ValueError("Invalid Git repository URL")
+
         return (text.replace(key1, replacement),)