add(gitea-api): comment getter and update functions

This implements the getter api functions and update functions for
comments. WIP for #1.

cmd/gitw/main.go

@@ -20,10 +20,24 @@ func main() {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(-1)
 	}
+	comments, err := server.GetComments(repository)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(-1)
+	}
 
 	fmt.Printf("%#v\n", issue)
 	fmt.Println("---")
 	fmt.Printf("%#v\n", milestone)
+	fmt.Println("---")
+
+	for _, comment := range comments {
+		// NOTE: filter comments to only include comments which are related to the current issue
+		// Order them by their Id's as that's the order they are in the issue (most likely)
+		if comment.Issue_url == issue.Html_url {
+			fmt.Printf("%#v\n", comment)
+		}
+	}
 
 	// necessary configurations (see config file gitw.json)
 	// - access code for gitea