Trello: https://trello.com/c/nV7mjrf9/

This is the first step towards adapting the storage code to use queries.
As this part of the code is rather complex, we decided to move as many
components as possible to TypeScript to have a kind of security net.

## What is included

* Add a set of types from from our OpenAPI docs (see #1564) in
`api/storage/types`.
* Add a set of storage UI types in `types/storage`. We should unify the
types, but let's do it later.
* Define a new `api/storage` module moving big chunks of the
`StorageClient` code.
* Define a set of queries under `queries/storage`.
* Adapt the `ProposalPage` component to use queries. It retrieves a lot
of information that injects to nested components.
* Convert `ProposalPage` and `InstallationDeviceField` to TypeScript.

## What is missing

* As you may see, the front end is not building. That problems (and
other subtle bugs) will be fixed as we adapt the rest of storage
components to TypeScript. So a bunch of additional pull requests will
follow.
* Additionally, we are removing all those skeletons from the UI. We will
use a unified mechanism.

* It is not needed as the parser correctly identifies those functions.

* The client is deprecated. Let's move to queries.

#1578)

Continuation of #1577. It covers the conversion of the following
components/modules:

* `EncryptionField`
* `PartitionsField`
* `ProposalSettingsSection`
* `SnapshotsField`
* `VolumeDialog`
* `InvalidMaxSizeError`
* `VolumeFields`
* `VolumeLocationDialog`
* `VolumeLocationSelectorTable`
* `BootSelection`
* `utils`

Let's merge `master` into the `storage-typescript` branch to avoid
potential conflicts.

Follow-up of #1577. It adapts `BootSelection` and `SpacePolicySelection`
to use queries.

* This component is not used anymore.

…2) (#1583)

Continuation of #1577. It covers the conversion of the following
components/modules:

* `BootConfigField`
* `device-utils`
* `SpaceActionsTable`
* `DeviceSelectorTable`
* `EncryptionSettingsDialog`
* `ProposalActionDialog`
* `ProposalActionSummary`
* `StoragePage`
* `ProposalResultSection`
* `ProposalTransactionalInfo`
* `SpaceActionsTable`