Add OAPI security features

Author: Josh

README.md

@@ -97,6 +97,21 @@ import "oapi/v1/service.proto";
 
 option (oapi.v1.file) = {
   host: "myawesomeapi.com"
+
+  security_schemes: {
+    name: "bearer_auth"
+    scheme: {
+      type: "http"
+      scheme: "bearer"
+      bearer_format: "JWT"
+    }
+  }
+
+  // Since this is at the file level, it's applied to all.
+  security: {
+    name: "bearer_auth"
+    scopes: ["read:resource"]
+  }
 };
 
 service MyService {

api/oapi/v1/file.pb.go

@@ -3,6 +3,7 @@ syntax = "proto3";
 package oapi.v1;
 
 import "google/protobuf/descriptor.proto";
+import "oapi/v1/security.proto";
 
 option go_package = "github.com/technicallyjosh/protoc-gen-openapi/api/oapi/v1;oapiv1";
 
@@ -18,4 +19,12 @@ message FileOptions {
   // The default prefix for all services and methods in a file. This can be
   // overridden by the service or a method definition.
   string prefix = 2;
+
+  // Security schemes defined in a file. All files will be consolidated into one
+  // list.
+  //  map<string, SecurityScheme> security_schemes = 3;
+  repeated SecurityScheme security_schemes = 3;
+
+  // Security to be used on all services and routes by default in the file.
+  repeated Security security = 4;
 }