feat(admin-sdk,admin-bundler,admin-shared,medusa): Restructure admin packages (#8988)

**What**
- Renames /admin-next -> /admin
- Renames @medusajs/admin-sdk -> @medusajs/admin-bundler
- Creates a new package called @medusajs/admin-sdk that will hold all tooling relevant to creating admin extensions. This is currently `defineRouteConfig` and `defineWidgetConfig`, but will eventually also export methods for adding custom fields, register translation, etc. 
  - cc: @shahednasser we should update the examples in the docs so these functions are imported from `@medusajs/admin-sdk`. People will also need to install the package in their project, as it's no longer a transient dependency.
  - cc: @olivermrbl we might want to publish a changelog when this is merged, as it is a breaking change, and will require people to import the `defineXConfig` from the new package instead of `@medusajs/admin-shared`.
- Updates CODEOWNERS so /admin packages does not require a review from the UI team.

packages/admin/dashboard/src/hooks/api/workflow-executions.tsx

@@ -0,0 +1,52 @@
+import { QueryKey, UseQueryOptions, useQuery } from "@tanstack/react-query"
+import { sdk } from "../../lib/client"
+import { queryKeysFactory } from "../../lib/query-key-factory"
+import { HttpTypes } from "@medusajs/types"
+import { FetchError } from "@medusajs/js-sdk"
+
+const WORKFLOW_EXECUTIONS_QUERY_KEY = "workflow_executions" as const
+export const workflowExecutionsQueryKeys = queryKeysFactory(
+  WORKFLOW_EXECUTIONS_QUERY_KEY
+)
+
+export const useWorkflowExecutions = (
+  query?: HttpTypes.AdminGetWorkflowExecutionsParams,
+  options?: Omit<
+    UseQueryOptions<
+      HttpTypes.AdminGetWorkflowExecutionsParams,
+      FetchError,
+      HttpTypes.AdminWorkflowExecutionListResponse,
+      QueryKey
+    >,
+    "queryKey" | "queryFn"
+  >
+) => {
+  const { data, ...rest } = useQuery({
+    queryFn: () => sdk.admin.workflowExecution.list(query),
+    queryKey: workflowExecutionsQueryKeys.list(query),
+    ...options,
+  })
+
+  return { ...data, ...rest }
+}
+
+export const useWorkflowExecution = (
+  id: string,
+  options?: Omit<
+    UseQueryOptions<
+      HttpTypes.AdminWorkflowExecutionResponse,
+      FetchError,
+      HttpTypes.AdminWorkflowExecutionResponse,
+      QueryKey
+    >,
+    "queryKey" | "queryFn"
+  >
+) => {
+  const { data, ...rest } = useQuery({
+    queryFn: () => sdk.admin.workflowExecution.retrieve(id),
+    queryKey: workflowExecutionsQueryKeys.detail(id),
+    ...options,
+  })
+
+  return { ...data, ...rest }
+}