Implement meeting assistant v1

MeetingAssistant/MeetingNotes/ObsidianMeetingNoteOpener.cs

@@ -0,0 +1,26 @@
+using System.Diagnostics;
+
+namespace MeetingAssistant.MeetingNotes;
+
+public sealed class ObsidianMeetingNoteOpener : IMeetingNoteOpener
+{
+    private readonly ILogger<ObsidianMeetingNoteOpener> logger;
+
+    public ObsidianMeetingNoteOpener(ILogger<ObsidianMeetingNoteOpener> logger)
+    {
+        this.logger = logger;
+    }
+
+    public Task OpenAsync(string notePath, CancellationToken cancellationToken)
+    {
+        var uri = $"obsidian://open?path={Uri.EscapeDataString(Path.GetFullPath(notePath))}";
+        Process.Start(new ProcessStartInfo
+        {
+            FileName = uri,
+            UseShellExecute = true
+        });
+        logger.LogInformation("Opened meeting note in Obsidian via {ObsidianUri}", uri);
+
+        return Task.CompletedTask;
+    }
+}