[Authz] Mandatory Security Config (#215180)

## Summary

This PR makes `security` a required field for route registration. To
incorporate the new required filed, changes has been made:

1. **Test file updates**. A lot of the updates made in this PR were made
in tests.
2. **Versioned route security configuration**. For the versioned route
`security` config has been lifted up to the top-level definition:

    Before
    ```ts
    router.versioned
      .get({
        path: '/api/path',
        options: { ... },
        ...
      }, handler)
      .addVersion({
         version: 1,
         validate: false,
         security: {
          authz: {
            requiredPrivileges: ['privilege'],
          },
         },
      });
    ```
    
    After
    ```ts
    router.versioned
      .get({
        path: '/api/path',
        options: { ... },
         security: {
          authz: {
            requiredPrivileges: ['privilege'],
          },
         },
        ...
      }, handler)
      .addVersion({
         version: 1,
         validate: false,
      });
    ```

3. **Type adjustments for route wrappers**. Type changes has been made
in:
-
`x-pack/solutions/observability/plugins/infra/server/lib/adapters/framework/adapter_types.ts`
-
`x-pack/solutions/observability/plugins/metrics_data_access/server/lib/adapters/framework/adapter_types.ts`
-
`x-pack/solutions/observability/plugins/synthetics/server/routes/types.ts`
-
`x-pack/solutions/observability/plugins/uptime/server/legacy_uptime/routes/types.ts`

Security was made an optional field for the wrappers defined in those
files, since the default security is provided in the wrapper itself and
then passed down to the core router.

### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)


__Closes: https://github.com/elastic/kibana/issues/215331__

---------

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

examples/feature_flags_example/server/routes/index.ts

@@ -16,6 +16,9 @@ export function defineRoutes(router: IRouter) {
     .get({
       path: '/api/feature_flags_example/example',
       access: 'public',
+      security: {
+        authz: { enabled: false, reason: 'Public route that does not require authorization' },
+      },
     })
     .addVersion(
       {