Plugins: Move plugin installing + uninstalling logic from CLI to plugins package (#33274)

* move guts from cli to server

* renaming + refactoring

* add pluginsDir arg

* arg fixes

* add support for repo URL override

* add funcs to interface

* use pluginID consistently

* swap args

* pass mandatory grafanaVersion field

* introduce logger interface

* create central logger for CLI

* add infra log wrapper

* re-add log initer step

* remove unused logger

* add checks for uninstalling

* improve debug blue

* make sure to close file

* fix linter issues

* remove space

* improve newline usage

* refactor packaging

* improve logger API

* fix interface func names

* close file and reformat zipslip catch

* handle G305 linter warning

* add helpful debug log

pkg/plugins/ifaces.go

@@ -2,6 +2,7 @@ package plugins
 
 import (
 	"context"
+	"os"
 
 	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/models"
@@ -70,3 +71,26 @@ type DataRequestHandler interface {
 	// HandleRequest handles a data request.
 	HandleRequest(context.Context, *models.DataSource, DataQuery) (DataResponse, error)
 }
+
+type PluginInstaller interface {
+	// Install finds the plugin given the provided information
+	// and installs in the provided plugins directory.
+	Install(pluginID, version, pluginsDirectory, pluginZipURL, pluginRepoURL string) error
+	// Uninstall removes the specified plugin from the provided plugins directory.
+	Uninstall(pluginID, pluginPath string) error
+	DownloadFile(pluginID string, tmpFile *os.File, url string, checksum string) error
+}
+
+type PluginInstallerLogger interface {
+	Successf(format string, args ...interface{})
+	Failuref(format string, args ...interface{})
+
+	Info(args ...interface{})
+	Infof(format string, args ...interface{})
+	Debug(args ...interface{})
+	Debugf(format string, args ...interface{})
+	Warn(args ...interface{})
+	Warnf(format string, args ...interface{})
+	Error(args ...interface{})
+	Errorf(format string, args ...interface{})
+}