feat: expose plugins and presets on SwaggerUI global symbol (#9189)

Part of this commit is also:
- complete plugins consolidation
- complete presets consolidation
- build system consolidation

Refs #9188

test/unit/components/operations.jsx

@@ -1,9 +1,9 @@
 import React from "react"
 import { render } from "enzyme"
 import { fromJS } from "immutable"
-import DeepLink from "components/deep-link"
-import Operations from "components/operations"
-import {Collapse} from "components/layout-utils"
+import DeepLink from "core/components/deep-link"
+import Operations from "core/components/operations"
+import {Collapse} from "core/components/layout-utils"
 
 const components = {
   Collapse,