Upgrade toolkits (#1878)

Upgrade the version of related toolkits:
- upgrade llvm to 15.0
- upgrade wasi-sdk to 19.0
- upgrade emsdk to 3.1.28
- upgrade wabt to 1.0.31
- upgrade binaryen to 111

And upgrade the CI scripts, sample workload build scripts, Dockerfiles, and documents.

samples/workload/cmake/FindWASISDK.cmake

@@ -0,0 +1,38 @@
+# Copyright (C) 2019 Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#
+# Output below variables:
+#   - WASISDK_HOME. the installation location
+#   - WASISDK_SYSROOT. where wasi-sysroot is
+#   - WASISDK_TOOLCHAIN. where wasi-sdk.cmake is
+#
+
+include(CMakePrintHelpers)
+include(FindPackageHandleStandardArgs)
+
+file(GLOB WASISDK_SEARCH_PATH "/opt/wasi-sdk-*")
+find_path(WASISDK_HOME
+  NAMES share/wasi-sysroot
+  PATHS ${WASISDK_SEARCH_PATH}
+  NO_CMAKE_FIND_ROOT_PATH
+  NO_SYSTEM_ENVIRONMENT_PATH
+  REQUIRED
+)
+
+string(REGEX MATCH [0-9]+\.[0-9]+\.*[0-9]* WASISDK_VERSION ${WASISDK_HOME})
+
+#cmake_print_variables(WASISDK_HOME WASISDK_VERSION)
+find_package_handle_standard_args(WASISDK REQUIRED_VARS WASISDK_HOME VERSION_VAR WASISDK_VERSION)
+
+if(WASISDK_FOUND)
+  mark_as_advanced(WASISDK_SEARCH_PATH)
+  mark_as_advanced(WASISDK_VERSION)
+
+  set(WASISDK_CC_COMMAND     ${WASISDK_HOME}/bin/clang)
+  set(WASISDK_CXX_COMMAND    ${WASISDK_HOME}/bin/clang++)
+  set(WASISDK_SYSROOT        ${WASISDK_HOME}/share/wasi-sysroot)
+  set(WASISDK_TOOLCHAIN      ${WASISDK_HOME}/share/cmake/wasi-sdk.cmake)
+else()
+  # TODO: install WASISDK
+endif()