Implement Slack flavored markdown reporting for report tasks

src/main.rs

@@ -1,3 +1,15 @@
-fn main() {
-    println!("Hello, world!");
+mod things;
+mod reporter;
+
+use reporter::{MarkdownReporter, Reporter};
+
+use things::task::Task;
+use anyhow::Result;
+
+fn main() -> Result<()> {
+    let today = Task::today()?;
+    let reported: Vec<Task> = today.into_iter().filter(|task| task.has_tag("Report")).collect();
+    println!("{}", MarkdownReporter.report(reported));
+
+    Ok(())
 }