Move timeout_encoding from core/ext/transport/chttp2 to core/lib/transport

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

gRPC-Core.podspec

gRPC.podspec

grpc.gemspec

package.xml

src/core/ext/transport/chttp2/transport/chttp2_transport.c

src/core/ext/transport/chttp2/transport/hpack_encoder.c

src/core/ext/transport/chttp2/transport/parsing.c

src/core/lib/transport/timeout_encoding.c

src/core/lib/transport/timeout_encoding.h

src/python/grpcio/grpc_core_dependencies.py

test/core/transport/timeout_encoding_test.c

tools/doxygen/Doxyfile.core.internal

tools/run_tests/sources_and_headers.json

vsprojects/vcxproj/grpc/grpc.vcxproj