Plugins: Add Plugin FS abstraction (#63734)

* unexport pluginDir from dto

* first pass

* tidy

* naming + add mutex

* add dupe checking

* fix func typo

* interface + move logic from renderer

* remote finder

* remote signing

* fix tests

* tidy up

* tidy markdown logic

* split changes

* fix tests

* slim interface down

* fix status code

* tidy exec path func

* fixup

* undo changes

* remove unused func

* remove unused func

* fix goimports

* fetch remotely

* simultaneous support

* fix linter

* use var

* add exception for gosec warning

* fixup

* fix tests

* tidy

* rework cfg pattern

* simplify

* PR feedback

* fix dupe field

* remove g304 nolint

* apply PR feedback

* remove unnecessary gosec nolint

* fix finder loop and update comment

* fix map alloc

* fix test

* remove commented code

pkg/services/updatechecker/plugins_test.go

@@ -135,6 +135,7 @@ func TestPluginUpdateChecker_checkForUpdates(t *testing.T) {
 							Info: plugins.Info{Version: "0.9.0"},
 							Type: plugins.DataSource,
 						},
+						Class: plugins.External,
 					},
 					{
 						JSONData: plugins.JSONData{
@@ -142,6 +143,7 @@ func TestPluginUpdateChecker_checkForUpdates(t *testing.T) {
 							Info: plugins.Info{Version: "0.5.0"},
 							Type: plugins.App,
 						},
+						Class: plugins.External,
 					},
 					{
 						JSONData: plugins.JSONData{
@@ -149,14 +151,15 @@ func TestPluginUpdateChecker_checkForUpdates(t *testing.T) {
 							Info: plugins.Info{Version: "2.5.7"},
 							Type: plugins.Panel,
 						},
+						Class: plugins.Bundled,
 					},
 					{
-						Class: plugins.Core,
 						JSONData: plugins.JSONData{
 							ID:   "test-core-panel",
 							Info: plugins.Info{Version: "0.0.1"},
 							Type: plugins.Panel,
 						},
+						Class: plugins.Core,
 					},
 				},
 			},