feat: add mgw stream types (#259)

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##### Checklist
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- [ ] `npm test` passes
- [ ] tests and/or benchmarks are included
- [ ] documentation is changed or added
- [ ] commit message follows commit guidelines

##### Affected core subsystem(s)
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##### Description of change
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

- **New Features**
- Introduced a new enum value to enhance the categorization of
controller and method types.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

core/types/controller-decorator/model/types.ts

@@ -10,6 +10,7 @@ export enum ControllerType {
   SOFA_RPC = 'SOFA_RPC',
   SOFA_RPC_STREAM = 'SOFA_RPC_STREAM',
   MGW_RPC = 'MGW_RPC',
+  MGW_RPC_STREAM = 'MGW_RPC_STREAM',
   MESSAGE = 'MESSAGE',
   SCHEDULE = 'SCHEDULE',
   HEADERS = 'HEADERS',
@@ -24,6 +25,7 @@ export enum MethodType {
   SOFA_RPC = 'SOFA_RPC',
   SOFA_RPC_STREAM = 'SOFA_RPC_STREAM',
   MGW_RPC = 'MGW_RPC',
+  MGW_RPC_STREAM = 'MGW_RPC_STREAM',
   MESSAGE = 'MESSAGE',
   SCHEDULE = 'SCHEDULE',
 }