feat(VPCPeeringConnection): add support for custom resource and additional fields for Modify OP and auto-accepting (#158)

## Changes
This PR adds the `vpcpeeringconnections` custom resource via the standard code-generator output, but with a few custom additions:
- Adds the possibility to use an ACK VPC resource as a [Reference](https://aws-controllers-k8s.github.io/community/docs/contributor-docs/code-generator-config/#references-making-a-field-refer-to-another-resource) for the fields `spec.vpcRef` (instead of `spec.vpcId`) and `spec.peerVpcRef` (instead of `spec.peerVpcId`).
- Adds the `spec.accepterPeeringConnectionOptions` and `spec.requesterPeeringConnectionOptions` fields, which come from the `ModifyVpcPeeringConnectionOptions` API call, to allow the use of the `allowDnsResolutionFromRemoteVpc`, `AllowEgressFromLocalVpcToRemoteClassicLink` and `AllowEgressFromLocalClassicLinkToRemoteVpc` sub-fields.
- Adds the `spec.acceptRequest` (boolean) which will allow the VPC Peering Connection Request to automatically switch from status `pending-acceptance` to `active` without manual intervention. (Inspired by Crossplane's implementation ([Ref](https://doc.crds.dev/github.com/crossplane/provider-aws/ec2.aws.crossplane.io/VPCPeeringConnection/[email protected])))
- Adds the field `spec.routes.vpcPeeringConnectionRef` to the Route Table CR

> Note: In [a separate PR](#159), we add the fields `spec.acceptVPCPeeringRequestsFromVPCID` and `spec.acceptVPCPeeringRequestsFromVPCRefs` to the VPC CRD, to allow you to add a list of VPC's from which you'd like to automatically accept incoming VPC Peering requests from.

## References
- [Slack Thread](https://kubernetes.slack.com/archives/C0402D8JJS1/p1700682197552809)
- Github Issue: aws-controllers-k8s/community#1943

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: marcdavoli

apis/v1alpha1/ack-generate-metadata.yaml

@@ -1,13 +1,13 @@
 ack_generate_info:
-  build_date: "2023-09-18T23:03:44Z"
-  build_hash: 892f29d00a4c4ad21a2fa32919921de18190979d
-  go_version: go1.20.3
-  version: v0.27.1
-api_directory_checksum: 6e2d850d97f2f72db31c9bef522eca4ab95b3fcd
+  build_date: "2023-12-06T21:00:34Z"
+  build_hash: 1cc9b5172d3d1676af578a3411e8672698ec29ce
+  go_version: go1.21.0
+  version: 1cc9b51
+api_directory_checksum: d452bf19bfd1496aacdc215bf7cc9ea86c55c122
 api_version: v1alpha1
 aws_sdk_go_version: v1.44.93
 generator_config_info:
-  file_checksum: c474e6cdec9622afad4b4cef415483a7bd0eda41
+  file_checksum: 86b3e3aa1ff4769894d475244d0cc5902bcb258f
   original_file_name: generator.yaml
 last_modification:
   reason: API generation

apis/v1alpha1/generator.yaml

@@ -36,6 +36,8 @@ ignore:
     - CreateVpcEndpointInput.DryRun
     - CreateVpcEndpointInput.TagSpecifications
     - CreateVpcEndpointInput.ClientToken
+    - CreateVpcPeeringConnectionInput.DryRun
+    - CreateVpcPeeringConnectionInput.TagSpecifications
     - DeleteRouteInput.DryRun
     - DeleteRouteInput.RouteTableId
     # support EC2-VPC only
@@ -122,7 +124,7 @@ ignore:
     #- VpcEndpoint
     #- Vpc
     - VpcCidrBlock
-    - VpcPeeringConnection
+    #- VpcPeeringConnection
     - VpnConnectionRoute
     - VpnConnection
     - VpnGateway    
@@ -184,6 +186,10 @@ operations:
     operation_type:
       - Delete
     resource_name: Instance
+  ModifyVpcPeeringConnectionOptions:
+    operation_type:
+      - Update
+    resource_name: VpcPeeringConnection
 resources:
   DhcpOptions:
     exceptions:
@@ -468,6 +474,10 @@ resources:
         references:
           resource: VPCEndpoint
           path: Status.VPCEndpointID
+      Routes.VPCPeeringConnectionID:
+        references:
+          resource: VPCPeeringConnection
+          path: Status.VPCPeeringConnectionID
     hooks:
       delta_pre_compare:
         code: customPreCompare(delta, a, b)
@@ -779,5 +789,45 @@ resources:
       sdk_file_end:
         template_path: hooks/vpc_endpoint/sdk_file_end.go.tpl
     update_operation:
-      custom_method_name: customUpdateVPCEndpoint
-    
+      custom_method_name: customUpdateVPCEndpoint  
+  VpcPeeringConnection:
+    fields:      
+      VpcId:
+        references:
+          resource: VPC
+          path: Status.VPCID
+      peerVpcId:
+        references:
+          resource: VPC
+          path: Status.VPCID
+      AcceptRequest:
+        type: bool
+      AccepterPeeringConnectionOptions:
+        from:
+          operation: ModifyVpcPeeringConnectionOptions
+          path: AccepterPeeringConnectionOptions
+      RequesterPeeringConnectionOptions:
+        from:
+          operation: ModifyVpcPeeringConnectionOptions
+          path: RequesterPeeringConnectionOptions
+      Tags:
+        from:
+          operation: CreateTags
+          path: Tags
+        compare:
+          is_ignored: True
+    update_operation:
+      omit_unchanged_fields: true
+    hooks:
+      delta_pre_compare:
+        code: compareTags(delta, a, b)
+      sdk_create_post_build_request:
+        template_path: hooks/vpc_peering_connection/sdk_create_post_build_request.go.tpl
+      sdk_create_post_set_output:
+        template_path: hooks/vpc_peering_connection/sdk_create_post_set_output.go.tpl
+      sdk_update_pre_build_request:
+        template_path: hooks/vpc_peering_connection/sdk_update_pre_build_request.go.tpl
+      sdk_read_many_post_set_output:
+        template_path: hooks/vpc_peering_connection/sdk_read_many_post_set_output.go.tpl
+      sdk_file_end:
+        template_path: hooks/vpc_peering_connection/sdk_file_end.go.tpl