feat(ui): Automatically refresh workflows in the "Actions" list (#7361)

- Make the "Actions" list (for example, https://codeberg.org/forgejo/forgejo/actions) dynamically refresh using htmx and partial page reloading. This addresses a pet peeve of mine, I find it common to end up on this page and have workflows in-progress, but not be able to monitor the workflows to success or failure from the page as it currently doesn't do any data refreshing.
- There are a few major risks involves with this change.
  - Increased server-side load & network utilization.  In order to mitigate this risk, I have configured the refresh to occur every 30 seconds **only** when the Page Visibility API indicates that the web page is currently visible to the end-user. It is still reasonable to assume this change will increase server-side load though.
  - UI interactions on the page, such as the "Actor" and "Status" dropdown and the workflow dispatch form, would be replaced from the server with non-expanded UI during the refresh. This problem is prevented by stopping the refresh while these UIs are in their expanded states.
- E2E tests added.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7361
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>

routers/web/repo/actions/actions.go

@@ -31,8 +31,9 @@ import (
 )
 
 const (
-	tplListActions base.TplName = "repo/actions/list"
-	tplViewActions base.TplName = "repo/actions/view"
+	tplListActions      base.TplName = "repo/actions/list"
+	tplListActionsInner base.TplName = "repo/actions/list_inner"
+	tplViewActions      base.TplName = "repo/actions/view"
 )
 
 type Workflow struct {
@@ -67,6 +68,8 @@ func List(ctx *context.Context) {
 	curWorkflow := ctx.FormString("workflow")
 	ctx.Data["CurWorkflow"] = curWorkflow
 
+	listInner := ctx.FormBool("list_inner")
+
 	var workflows []Workflow
 	if empty, err := ctx.Repo.GitRepo.IsEmpty(); err != nil {
 		ctx.ServerError("IsEmpty", err)
@@ -250,7 +253,11 @@ func List(ctx *context.Context) {
 	ctx.Data["Page"] = pager
 	ctx.Data["HasWorkflowsOrRuns"] = len(workflows) > 0 || len(runs) > 0
 
-	ctx.HTML(http.StatusOK, tplListActions)
+	if listInner {
+		ctx.HTML(http.StatusOK, tplListActionsInner)
+	} else {
+		ctx.HTML(http.StatusOK, tplListActions)
+	}
 }
 
 // loadIsRefDeleted loads the IsRefDeleted field for each run in the list.