Move documentation and helper directories out of root

Signed-off-by: Derek McGowan <derek@mcg.dev>

contrib/fuzz/filters_fuzzers.go

@@ -0,0 +1,31 @@
+// +build gofuzz
+
+/*
+   Copyright The containerd Authors.
+
+   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.
+*/
+
+package fuzz
+
+import (
+	"github.com/containerd/containerd/filters"
+)
+
+func FuzzFiltersParse(data []byte) int {
+	_, err := filters.Parse(string(data))
+	if err != nil {
+		return 0
+	}
+	return 1
+}

contrib/fuzz/platforms_fuzzers.go

@@ -0,0 +1,31 @@
+// +build gofuzz
+
+/*
+   Copyright The containerd Authors.
+
+   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.
+*/
+
+package fuzz
+
+import (
+	"github.com/containerd/containerd/platforms"
+)
+
+func FuzzPlatformsParse(data []byte) int {
+	_, err := platforms.Parse(string(data))
+	if err != nil {
+		return 0
+	}
+	return 1
+}