feat: Add Line plugin (#1630)

* feat: add LINE plugin (#1630) (thanks @plum-dawg)

* feat: complete LINE plugin (#1630) (thanks @plum-dawg)

* chore: drop line plugin node_modules (#1630) (thanks @plum-dawg)

* test: mock /context report in commands test (#1630) (thanks @plum-dawg)

* test: limit macOS CI workers to avoid OOM (#1630) (thanks @plum-dawg)

* test: reduce macOS CI vitest workers (#1630) (thanks @plum-dawg)

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Co-authored-by: Peter Steinberger <steipete@gmail.com>

src/plugins/runtime.ts

@@ -9,6 +9,7 @@ const createEmptyRegistry = (): PluginRegistry => ({
   providers: [],
   gatewayHandlers: {},
   httpHandlers: [],
+  httpRoutes: [],
   cliRegistrars: [],
   services: [],
   commands: [],