ref: pass tracer to plugin factory func (#93701)

* ref: pass tracer to plugin factory func

* fix: add tracer to coreplugin

* test: fix test, generate wire

* test: ignore trace field in loader_test

* ref: pass tracer as dependency, don't store in plugin

* ref: wrap tracer with tracer provider to satisfy WithTracerProvider

* ref: use otel trace.Tracer type for tracer

pkg/plugins/backendplugin/grpcplugin/client_proto.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 
+	trace "go.opentelemetry.io/otel/trace"
 	"google.golang.org/grpc"
 
 	"github.com/grafana/grafana-plugin-sdk-go/genproto/pluginv2"
@@ -44,6 +45,7 @@ type ProtoClientOpts struct {
 	ExecutableArgs []string
 	Env            []string
 	Logger         log.Logger
+	Tracer         trace.Tracer
 }
 
 func NewProtoClient(opts ProtoClientOpts) (ProtoClient, error) {
@@ -56,6 +58,7 @@ func NewProtoClient(opts ProtoClientOpts) (ProtoClient, error) {
 			versionedPlugins: pluginSet,
 		},
 		opts.Logger,
+		opts.Tracer,
 		func() []string { return opts.Env },
 	)