Add Markdown format

Closes #6

redmine_reporter/formatter_md.py

@@ -0,0 +1,35 @@
+from typing import List, Tuple
+from redminelib.resources import Issue
+from .formatter import get_version, hours_to_human, STATUS_TRANSLATION
+
+
+def format_md(issue_hours: List[Tuple[Issue, float]], fill_time: bool = True) -> str:
+    """
+    Formats the list of issues with spent time into a Markdown table.
+    Returns a string containing the Markdown content.
+    """
+
+    lines = []
+    lines.append("| Проект | Версия | Задача | Статус | Затрачено |")
+    lines.append("|--------|--------|--------|--------|-----------|")
+
+    prev_project = None
+    prev_version = None
+
+    for issue, hours in issue_hours:
+        project = str(issue.project)
+        version = get_version(issue)
+        status_en = str(issue.status)
+        status_ru = STATUS_TRANSLATION.get(status_en, status_en)
+        time_text = hours_to_human(hours) if fill_time else ""
+
+        display_project = project if project != prev_project else ""
+        display_version = version if (project != prev_project or version != prev_version) else ""
+
+        task_cell = f"{issue.id}. {issue.subject}"
+        lines.append(f"| {display_project} | {display_version} | {task_cell} | {status_ru} | {time_text} |")
+
+        prev_project = project
+        prev_version = version
+
+    return "\n".join(lines)