Plugins: Plugin settings refactor (#46246)

* remove bus and direct use of sqlStore

* add decryption to interface

* return nil

* rename field

* re-order fields

* rename file

pkg/services/pluginsettings/pluginsettings.go

@@ -0,0 +1,21 @@
+package pluginsettings
+
+import (
+	"context"
+
+	"github.com/grafana/grafana/pkg/models"
+)
+
+type Service interface {
+	// GetPluginSettings returns all Plugin Settings for the provided Org
+	GetPluginSettings(ctx context.Context, orgID int64) ([]*models.PluginSettingInfoDTO, error)
+	// GetPluginSettingById returns a Plugin Settings by Plugin ID
+	GetPluginSettingById(ctx context.Context, query *models.GetPluginSettingByIdQuery) error
+	// UpdatePluginSetting updates a Plugin Setting
+	UpdatePluginSetting(ctx context.Context, cmd *models.UpdatePluginSettingCmd) error
+	// UpdatePluginSettingVersion updates a Plugin Setting's plugin version
+	UpdatePluginSettingVersion(ctx context.Context, cmd *models.UpdatePluginSettingVersionCmd) error
+	// DecryptedValues decrypts the encrypted secureJSONData of the provided plugin setting and
+	// returns the decrypted values.
+	DecryptedValues(ps *models.PluginSetting) map[string]string
+}