add flatbuffers

commit 6da1cf79d90eb242e7da5318241d42279a3df3ba
Author: Max Burke <max@urbanlogiq.com>
Date:   Sun Jan 19 14:47:28 2020 -0800

    [rust] Add use declarations to Rust-generated bindings for imported FB definitions (#5645)

    * Bugfix for Rust generation of union fields named with language keywords

flatbuffers/samples/kotlin_sample.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+#
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Note: This script runs on Mac and Linux. It requires `kotlin` to be installed
+# and `flatc` to be built (using `cmake` in the root directory).
+
+sampledir=$(cd $(dirname $BASH_SOURCE) && pwd)
+rootdir=$(cd $sampledir/.. && pwd)
+currentdir=$(pwd)
+
+if [[ "$sampledir" != "$currentdir" ]]; then
+  echo Error: This script must be run from inside the $sampledir directory.
+  echo You executed it from the $currentdir directory.
+  exit 1
+fi
+
+# Run `flatc`. Note: This requires you to compile using `cmake` from the
+# root `/flatbuffers` directory.
+if [ -e ../flatc ]; then
+  echo "compiling now"
+  ../flatc --kotlin --gen-mutable monster.fbs
+elif [ -e ../Debug/flatc ]; then
+  ../Debug/flatc --kotlin --gen-mutable monster.fbs
+else
+  echo 'flatc' could not be found. Make sure to build FlatBuffers from the \
+       $rootdir directory.
+  exit 1
+fi
+
+echo Compiling and running the Kotlin sample
+
+all_kt_files=`find $sampledir -name "*.kt" -print`
+# Run test
+mkdir -v "${sampledir}/kotlin"
+echo Compiling Java Runtime
+javac ${rootdir}/java/com/google/flatbuffers/*.java -d ${sampledir}/kotlin
+echo Compiling Kotlin source
+kotlinc -classpath ${sampledir}/../java:${sampledir}/kotlin $all_kt_files SampleBinary.kt -include-runtime -d ${sampledir}/kotlin
+# Make jar
+echo Making jar
+jar cvf ${sampledir}/kotlin/kotlin_sample.jar -C ${sampledir}/kotlin . > /dev/null
+echo Running test
+kotlin -cp ${sampledir}/kotlin/kotlin_sample.jar SampleBinary
+
+# Cleanup temporary files.
+rm -rf MyGame/
+# rm -rf ${sampledir}/kotlin