Add basic git commit date counter

.gitignore

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+__pycache__
+.venv

requirements.txt

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+pandas
+numpy
+GitPython

src/gitstats/commits.py

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+"""
+Generate a CSV file with daily stats commit count from a set of repositories
+"""
+
+from git import Repo
+import datetime
+
+REPO = "."
+
+repo = Repo(REPO)
+
+def repo_daily_commits(repo: Repo, year: int):
+    """Count how many commit was performed for each days in the year"""
+    data = {}
+    for commit in repo.iter_commits(all=True):
+        timestamp = commit.authored_date
+        date = datetime.date.fromtimestamp(timestamp)
+        if int(date.year) != year:
+            continue
+        if date not in data:
+            data[date] = 0
+        data[date] += 1
+    return data
+
+print(repo_daily_commits(repo, 2023))