temporary commit (read desc)

**This commit needs to be squashed!**

- establish general project structure
- put together a simple gitea wrapper
  - probably should be replaced with giteapy (see README.md)

gitea_github_sync/__main__.py

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+from cli import main
+
+main()

gitea_github_sync/cli.py

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+import argparse
+

gitea_github_sync/gitea/__main__.py

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+

gitea_github_sync/gitea/issues.py

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+class GiteaIssue:
+    

gitea_github_sync/gitea/repo.py

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+from urllib.parse import urlparse
+
+def urlparse_w(url):
+    parseresult = urlparse(url)
+    splitted_path = parseresult.path.split('/')
+
+    # add some more metadata
+    gitea_username = splitted_path[1]
+    gitea_reponame = splitted_path[2]
+
+    return {
+        "raw": parseresult,
+        "username": gitea_username,
+        "reponame": gitea_reponame,
+    }
+
+class GiteaRepo:
+    def __init__(self, urlspec):
+        """
+        Return a GiteaRepo from a urlspec (see urllib.parse.ParseResult) and some other metadata
+
+        For implementation details, see urlparse_w.
+
+        If you want to take an actual url, use the .from_url classmethod.
+        """
+        self.urlspec = urlspec
+
+    @classmethod
+    def from_url(cls, url):
+        """
+        Return a GiteaRepo from a url.
+        """
+
+        parsed = urlparse_w(url)
+        return cls(parsed)