refactor: rename module to pipely and migrate web UI to MUI

- Rename Go module from onixbyte.com/message-converter-manifest to onixbyte.com/pipely
- Replace shadcn UI with Material UI components across all pages
- Add axios-based API client in shared/web-client with credentials management
- Organise API calls into feature modules: auth, devices, deployments, artefacts, users
- Add .env.example with VITE_API_BASE_URL pointing to pipely.onixbyte.com
- Fix deprecated FormEvent → MouseEvent in dialog submit handlers

internal/device/handler.go

@@ -8,8 +8,8 @@ import (
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 
-	"onixbyte.com/message-converter-manifest/internal/database"
-	"onixbyte.com/message-converter-manifest/internal/model"
+	"onixbyte.com/pipely/internal/database"
+	"onixbyte.com/pipely/internal/model"
 )
 
 type Handler struct {