Add total coverage to report (#1)

* Add total coverage to report

Add total coverage to the generated report and output.

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/teamniteo/go-coverage-report?shareId=XXXX-XXXX-XXXX-XXXX).

* Fix wrong code

* Update github-action.sh

* Fix wrong code

Author: dz0ny

cmd/go-coverage-report/report.go

@@ -110,6 +110,8 @@ func (r *Report) Markdown() string {
 		)
 	}
 
+	fmt.Fprintf(report, "| **Total** | **%.2f%%** | |\n", r.New.Percent())
+
 	report.WriteString("\n")
 	r.addDetails(report)
 

cmd/go-coverage-report/report_test.go

@@ -27,6 +27,8 @@ func TestReport_Markdown(t *testing.T) {
 | github.com/fgrosse/prioqueue | 90.20% (**-9.80%**) | :thumbsdown: |
 | github.com/fgrosse/prioqueue/foo/bar | 0.00% (ø) |  |
 
+| **Total** | **90.20%** | |
+
 ---
 
 <details>
@@ -65,6 +67,8 @@ func TestReport_Markdown_OnlyChangedUnitTests(t *testing.T) {
 |-------------------|------------|---------|
 | github.com/fgrosse/prioqueue | 99.02% (**+8.82%**) | :thumbsup: |
 
+| **Total** | **99.02%** | |
+
 ---
 
 <details>