feat(gui, tauri): Save settings in Tauri storage (#102)

- Implemented dual persistence strategy:
  - **User Settings**: Persisted across app restarts using `tauri-plugin-store`.
  - **Transient State**: Persisted across page reloads using `sessionStorage`.
- Added `settingsSlice` reducer for managing persistent user settings.
- Updated Redux store configuration to handle multiple persistence layers.
- Added a new Settings page in the GUI where users can specify custom Electrum RPC URLs for Bitcoin and Monero node URLs.
  - Users can input their preferred Electrum server (`ssl://host:port`) and Monero daemon (`http://host:port`).
  - Input fields include validation to ensure correct URL formats.
  - Settings persist across application restarts using Tauri's storage plugin.
  - A reset option is available to revert to default settings.
- Improved the Daemon Controller in the Help page:
  - Renamed `RpcControlBox` to `DaemonControlBox` for clarity.
  - Users can now start the daemon manually if it isn't running or has failed.
  - Added a "Restart GUI" button to apply new settings immediately.
  - Displayed the daemon's status within the controller.
- Upgraded Tauri and related plugins to stable version `2.0.0`:
  - Updated `tauri`, `tauri-build`, and `tauri-utils` to `2.0.0`.
  - Ensured compatibility with the latest stable release.
- Updated Tauri plugins to version `2.0.0`:
  - `tauri-plugin-clipboard-manager`
  - `tauri-plugin-shell`
  - Added new plugins:
    - `tauri-plugin-store` for settings persistence.
    - `tauri-plugin-process` to enable application relaunch.
- Deferred Context initialization until explicitly triggered from the frontend.
  - Moved Context setup from the `setup` function to a new `initialize_context` Tauri command.
  - Allows the application to start without immediately initializing the backend context.
  - Context initialization now considers user-provided settings for Electrum and Monero nodes.
- Introduced a `ValidatedTextField` component for form inputs with validation logic.
  - Provides immediate feedback on input validity.
  - Used in the Settings page for Electrum and Monero node URLs.
- If the user provides an override Monero remote daemon, we check if it reachable and on the correct network before starting the `monero-wallet-rpc`
- Changed `bitcoin_confirmation_target` type from `usize` to `u16`.

src-gui/src/renderer/components/pages/help/HelpPage.tsx

@@ -2,14 +2,15 @@ import { Box, makeStyles } from "@material-ui/core";
 import ContactInfoBox from "./ContactInfoBox";
 import DonateInfoBox from "./DonateInfoBox";
 import FeedbackInfoBox from "./FeedbackInfoBox";
-import RpcControlBox from "./RpcControlBox";
-import TorInfoBox from "./TorInfoBox";
+import DaemonControlBox from "./DaemonControlBox";
+import SettingsBox from "./SettingsBox";
 
 const useStyles = makeStyles((theme) => ({
   outer: {
     display: "flex",
     gap: theme.spacing(2),
     flexDirection: "column",
+    paddingBottom: theme.spacing(2),
   },
 }));
 
@@ -18,8 +19,8 @@ export default function HelpPage() {
 
   return (
     <Box className={classes.outer}>
-      <RpcControlBox />
-      <TorInfoBox />
+      <DaemonControlBox />
+      <SettingsBox />
       <FeedbackInfoBox />
       <ContactInfoBox />
       <DonateInfoBox />