Move api-derive to correct location (#4343)

* Move api-derive to correct location

* Adjust (linting ok)

* No composite

* ApiDerive split

* Adjust

* Still WIP, getting closer

* It lints

* derive build issues sorted

* It builds :)

* Add system_health to mock

* api-augment usage

* Cleanups

* Adjust paths

* linting

* Some <'s

* Revert <>'s

* linting

* ordering

* Augmentation tweaks

* yarn.lock

* export

packages/api-base/src/types/api.ts

@@ -0,0 +1,4 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+export const __API_BASE_TYPES_API = 'empty';

packages/api-base/src/types/index.ts

@@ -1,6 +1,9 @@
 // Copyright 2017-2021 @polkadot/api authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+// this is augmented, do an augmentation export
+export * from '@polkadot/api-base/types/api';
+
 export * from './base';
 export * from './consts';
 export * from './errors';