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/tests/namespace_test/NamespaceA/NamespaceB/TableInNestedNS.go

@@ -0,0 +1,71 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package NamespaceB
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type TableInNestedNST struct {
+	Foo int32
+}
+
+func (t *TableInNestedNST) Pack(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	if t == nil { return 0 }
+	TableInNestedNSStart(builder)
+	TableInNestedNSAddFoo(builder, t.Foo)
+	return TableInNestedNSEnd(builder)
+}
+
+func (rcv *TableInNestedNS) UnPackTo(t *TableInNestedNST) {
+	t.Foo = rcv.Foo()
+}
+
+func (rcv *TableInNestedNS) UnPack() *TableInNestedNST {
+	if rcv == nil { return nil }
+	t := &TableInNestedNST{}
+	rcv.UnPackTo(t)
+	return t
+}
+
+type TableInNestedNS struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsTableInNestedNS(buf []byte, offset flatbuffers.UOffsetT) *TableInNestedNS {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &TableInNestedNS{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func (rcv *TableInNestedNS) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *TableInNestedNS) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *TableInNestedNS) Foo() int32 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.GetInt32(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *TableInNestedNS) MutateFoo(n int32) bool {
+	return rcv._tab.MutateInt32Slot(4, n)
+}
+
+func TableInNestedNSStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func TableInNestedNSAddFoo(builder *flatbuffers.Builder, foo int32) {
+	builder.PrependInt32Slot(0, foo, 0)
+}
+func TableInNestedNSEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}