Add initial version of ipam service for vl3 cases (#128)

* WIP: Add initial version of ipam

Signed-off-by: denis-tingaikin <denis.tingajkin@xored.com>

* improve readability

Signed-off-by: denis-tingaikin <denis.tingajkin@xored.com>

pkg/api/ipam/gen.go

@@ -0,0 +1,23 @@
+// Copyright (c) 2022 Cisco and/or its affiliates.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// 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 ipam provides the Network Service Mesh API: IpamService{Server,Client}.{Request}
+package ipam
+
+// Run with protoc and proto-gen-go matching the versions found in .github/workflows/ci.yaml
+// Please also note that you need a 'batteries included' version of protoc such as the one installed
+// with brew rather than the 'single binary' install to insure you get the correct *.proto files for imports
+//go:generate bash -c "protoc -I . ipam.proto --go_out=plugins=grpc,paths=source_relative:. --proto_path=$GOPATH/src/ --proto_path=$GOPATH/pkg/mod/  --proto_path=$( go list -f '{{ .Dir }}' -m github.com/golang/protobuf )"