Plugins: Split plugin manager into smaller components (#54384)

* split out plugin manager

* remove whitespace

* fix tests

* split up tests

* updating naming conventions

* simplify manager

* tidy

* add more fakes

* testing time

* add query verif to int test

* renaming

* add process tests

* tidy up manager tests

* add extra case to int test

* add more coverage to store and process tests

* remove comment

* fix capatilization

* init on provide

* remove addfromsource from API

pkg/plugins/ifaces.go

@@ -2,7 +2,6 @@ package plugins
 
 import (
 	"context"
-	"io"
 
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
 
@@ -24,6 +23,11 @@ type Manager interface {
 	Remove(ctx context.Context, pluginID string) error
 }
 
+type PluginSource struct {
+	Class Class
+	Paths []string
+}
+
 type CompatOpts struct {
 	GrafanaVersion string
 	OS             string
@@ -70,33 +74,3 @@ type PluginLoaderAuthorizer interface {
 	// CanLoadPlugin confirms if a plugin is authorized to load
 	CanLoadPlugin(plugin *Plugin) bool
 }
-
-// ListPluginDashboardFilesArgs list plugin dashboard files argument model.
-type ListPluginDashboardFilesArgs struct {
-	PluginID string
-}
-
-// GetPluginDashboardFilesArgs list plugin dashboard files result model.
-type ListPluginDashboardFilesResult struct {
-	FileReferences []string
-}
-
-// GetPluginDashboardFileContentsArgs get plugin dashboard file content argument model.
-type GetPluginDashboardFileContentsArgs struct {
-	PluginID      string
-	FileReference string
-}
-
-// GetPluginDashboardFileContentsResult get plugin dashboard file content result model.
-type GetPluginDashboardFileContentsResult struct {
-	Content io.ReadCloser
-}
-
-// DashboardFileStore is the interface for plugin dashboard file storage.
-type DashboardFileStore interface {
-	// ListPluginDashboardFiles lists plugin dashboard files.
-	ListPluginDashboardFiles(ctx context.Context, args *ListPluginDashboardFilesArgs) (*ListPluginDashboardFilesResult, error)
-
-	// GetPluginDashboardFileContents gets the referenced plugin dashboard file content.
-	GetPluginDashboardFileContents(ctx context.Context, args *GetPluginDashboardFileContentsArgs) (*GetPluginDashboardFileContentsResult, error)
-}