Move all engine generated resources into a single directory in the Xcode project

folder

Fix iOS builds using the keyboard service

Add stdout/stderr streaming for Dart debuggers.

Simplify Linux build config

Remove unnecesary DEPS hooks

We don't need to run "pub get" anymore because we don't have any real Dart
packages in this repo anymore.

rev to 0.0.62.

Update Dart SDK to latest stable version

Rev the engine again.

Add support for Linux IME

Text snaps to pixel grid, images don't

Previously, we tried to use the render tree's paint offset to move the text to
the proper position, but that appears to snap to integer logical pixels,
introducing jitter. Now we use the SkCanvas's matrix to position the text,
removing the jitter.

Fixes https://github.com/flutter/flutter/issues/234

Strip executables on Mac and iOS

Avoid removing the stub runner as Xcode relies on this being present during archiving for release

during archiving for release

Fix link to flutter CONTRIBUTING.md

Update Dart revision for FNL build