refactor: fully extract middleware into EIP-5792 Middleware (monorepo) package (#401)

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## Explanation

The newly created EIP-5792 Middleware package ([PR
#6422](MetaMask/core#6422)) currently contains
only the hooks required for the existing wallet middleware. To align
with the intended abstraction and reduce the monolithic nature of
wallet-middleware, we should fully extract the relevant middleware logic
from eth-json-rpc-middleware ([GitHub -
MetaMask/eth-json-rpc-middleware: Ethereum middleware for composing an
Ethereum provider using json-rpc-engine. Intended to replace
provider-engine](https://github.com/MetaMask/eth-json-rpc-middleware))
into this new package.

This PR removes the identified middleware into
@metamask/eip-5792-middleware.

PR [#6477](MetaMask/core#6477) from
https://github.com/MetaMask/core moves this middleware to the specified
package.

* Fixes https://consensyssoftware.atlassian.net/browse/WAPI-691

Author: ffmcgee725

src/index.ts

@@ -4,23 +4,6 @@ export * from './block-ref';
 export * from './block-tracker-inspector';
 export { createFetchMiddleware } from './fetch';
 export * from './inflight-cache';
-export type {
-  GetCallsStatusHook,
-  GetCallsStatusParams,
-  GetCallsStatusResult,
-} from './methods/wallet-get-calls-status';
-export { GetCallsStatusCode } from './methods/wallet-get-calls-status';
-export type {
-  GetCapabilitiesHook,
-  GetCapabilitiesParams,
-  GetCapabilitiesResult,
-} from './methods/wallet-get-capabilities';
-export type {
-  ProcessSendCallsHook,
-  SendCalls,
-  SendCallsParams,
-  SendCallsResult,
-} from './methods/wallet-send-calls';
 export type {
   RequestExecutionPermissionsRequestParams,
   RequestExecutionPermissionsResult,