[UI] Persist rpc/local node configuration between sessions

[darius279]

As an admin, I want that when I change the mirror node or RPC configuration, the selected configuration persist between sessions

Context

Description

When the user selects a different RPC or mirror node configuration. If the user stops and relaunch again the app, we should keep the last selected RPC and mirror configuration.

Acceptance criteria

• Given an environment with hashio and local node configuration for RPC. If the current configuration is hashio and I select local node, after restart the app my current configuration is local node.