⭐ feat(maitred): Update maitred - hookup to the API (#198)

## Description
We are attempting to hookup maitred to the API
Maitred duties will be:
- [ ] Hookup to the API
- [ ]  Wait for signal (from the API) to start Steam
- [ ] Stop signal to stop the gaming session, clean up Steam... and
maybe do the backup

## Summary by CodeRabbit

- **New Features**
- Introduced Docker-based deployment configurations for both the main
and relay applications.
- Added new API endpoints enabling real-time machine messaging and
enhanced IoT operations.
- Expanded database schema and actor types to support improved machine
tracking.

- **Improvements**
- Enhanced real-time communication and relay management with streamlined
room handling.
- Upgraded dependencies, logging, and error handling for greater
stability and performance.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: DatCaptainHorse <DatCaptainHorse@users.noreply.github.com>
Co-authored-by: Kristian Ollikainen <14197772+DatCaptainHorse@users.noreply.github.com>

packages/maitred/internal/auth/auth.go

@@ -0,0 +1,45 @@
+package auth
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"nestri/maitred/internal/resource"
+	"net/http"
+	"net/url"
+)
+
+type UserCredentials struct {
+	AccessToken  string `json:"access_token"`
+	RefreshToken string `json:"refresh_token"`
+}
+
+func FetchUserToken(machineID string, resource *resource.Resource) (*UserCredentials, error) {
+	data := url.Values{}
+	data.Set("grant_type", "client_credentials")
+	data.Set("client_id", "maitred")
+	data.Set("client_secret", resource.AuthFingerprintKey.Value)
+	data.Set("fingerprint", machineID)
+	data.Set("provider", "machine")
+	resp, err := http.PostForm(resource.Auth.Url+"/token", data)
+	if err != nil {
+		return nil, err
+	}
+	defer func(Body io.ReadCloser) {
+		err = Body.Close()
+		if err != nil {
+			slog.Error("Error closing body", "err", err)
+		}
+	}(resp.Body)
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("failed to auth: " + string(body))
+	}
+	credentials := UserCredentials{}
+	err = json.NewDecoder(resp.Body).Decode(&credentials)
+	if err != nil {
+		return nil, err
+	}
+	return &credentials, nil
+}