app/internal/log: extract log setup to separate package

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/internal/log/log.go

@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+// Package points standard output, standard error and the standard
+// library package log to the platform logger.
+package log

app/internal/log/log_android.go

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-package app
+package log
 
 /*
 #cgo LDFLAGS: -llog

app/internal/log/log_ios.go

@@ -2,7 +2,7 @@
 
 // +build darwin,ios
 
-package app
+package log
 
 /*
 #include "log_ios.h"

app/window.go

@@ -16,6 +16,8 @@ import (
 	"gioui.org/io/system"
 	"gioui.org/op"
 	"gioui.org/unit"
+
+	_ "gioui.org/app/internal/log"
 )
 
 // WindowOption configures a Window.