Plugins: Add /meta and /metas APIs to plugins app (#113775)

* add /meta and /metas APIs

* wrapped storage route

* format file

* fix switch statement lint issue

* fix plugininstaller test

---------

Co-authored-by: Todd Treece <todd.treece@grafana.com>

pkg/tests/apis/plugins/discovery_test.go

@@ -19,6 +19,35 @@ func TestIntegrationPluginsIntegrationDiscovery(t *testing.T) {
 				"version": "v0alpha1",
 				"freshness": "Current",
 				"resources": [
+					{
+						"resource": "pluginmetas",
+						"responseKind": {
+							"group": "",
+							"kind": "PluginMeta",
+							"version": ""
+						},
+						"scope": "Namespaced",
+						"singularResource": "pluginmeta",
+						"subresources": [
+							{
+								"responseKind": {
+									"group": "",
+									"kind": "PluginMeta",
+									"version": ""
+								},
+								"subresource": "status",
+								"verbs": [
+									"get",
+									"patch",
+									"update"
+								]
+							}
+						],
+						"verbs": [
+							"get",
+							"list"
+						]
+					},
 					{
 						"resource": "plugins",
 						"responseKind": {
@@ -29,17 +58,6 @@ func TestIntegrationPluginsIntegrationDiscovery(t *testing.T) {
 						"scope": "Namespaced",
 						"singularResource": "plugins",
 						"subresources": [
-							{
-								"responseKind": {
-									"group": "",
-									"kind": "ResourceCallOptions",
-									"version": ""
-								},
-								"subresource": "meta",
-								"verbs": [
-									"get"
-								]
-							},
 							{
 								"responseKind": {
 									"group": "",