Support changing labels of Actions runner without re-registration (#24806)

close #24540

related:
- Protocol: https://gitea.com/gitea/actions-proto-def/pulls/9
- Runner side: https://gitea.com/gitea/act_runner/pulls/201

changes:
- Add column of `labels` to table `action_runner`, and combine the value
of `agent_labels` and `custom_labels` column to `labels` column.
- Store `labels` when registering `act_runner`.
- Update `labels` when `act_runner` starting and calling `Declare`.
- Users cannot modify the `custom labels` in edit page any more.

other changes:
- Store `version` when registering `act_runner`.
- If runner is latest version, parse version from `Declare`. But older
version runner still parse version from request header.

templates/shared/actions/runner_edit.tmpl

@@ -13,10 +13,10 @@
 				</div>
 				<div class="field gt-dib gt-mr-4">
 					<label>{{.locale.Tr "actions.runners.last_online"}}</label>
-					<span>{{if .LastOnline}}{{TimeSinceUnix .LastOnline $.locale}}{{else}}{{$.locale.Tr "never"}}{{end}}</span>
+					<span>{{if .Runner.LastOnline}}{{TimeSinceUnix .Runner.LastOnline $.locale}}{{else}}{{$.locale.Tr "never"}}{{end}}</span>
 				</div>
 				<div class="field gt-dib gt-mr-4">
-					<label>{{.locale.Tr "actions.runners.agent_labels"}}</label>
+					<label>{{.locale.Tr "actions.runners.labels"}}</label>
 					<span>
 						{{range .Runner.AgentLabels}}
 						<span>{{.}}</span>
@@ -35,11 +35,6 @@
 				<label for="description">{{.locale.Tr "actions.runners.description"}}</label>
 				<input id="description" name="description" value="{{.Runner.Description}}">
 			</div>
-			<div class="field" data-tooltip-content="Labels are comma-separated. Whitespace at the beginning, end, and around the commas are ignored.">
-				<label for="custom_labels">{{.locale.Tr "actions.runners.custom_labels"}}</label>
-				<input id="custom_labels" name="custom_labels" value="{{StringUtils.Join .Runner.CustomLabels `,`}}">
-				<p class="help">{{.locale.Tr "actions.runners.custom_labels_helper"}}</p>
-			</div>
 
 			<div class="ui divider"></div>
 
@@ -81,7 +76,7 @@
 				{{end}}
 				{{if not .Tasks}}
 				<tr>
-					<td colspan="5">{{.locale.Tr "runners.task_list.no_tasks"}}</td>
+					<td colspan="5">{{.locale.Tr "actions.runners.task_list.no_tasks"}}</td>
 				</tr>
 				{{end}}
 			</tbody>

templates/shared/actions/runner_list.tmpl

@@ -67,7 +67,7 @@
 						<td>{{if .Version}}{{.Version}}{{else}}{{$.locale.Tr "unknown"}}{{end}}</td>
 						<td><span data-tooltip-content="{{.BelongsToOwnerName}}">{{.BelongsToOwnerType.LocaleString $.locale}}<span></td>
 						<td class="runner-tags">
-							{{range .AllLabels}}<span class="ui label">{{.}}</span>{{end}}
+							{{range .AgentLabels}}<span class="ui label">{{.}}</span>{{end}}
 						</td>
 						<td>{{if .LastOnline}}{{TimeSinceUnix .LastOnline $.locale}}{{else}}{{$.locale.Tr "never"}}{{end}}</td>
 						<td class="runner-ops">