chore: wire in initial viewmodel and view

Signed-off-by: Alan Brault <alan.brault@visus.io>

Packages/TempestasPresentation/Sources/TempestasPresentation/TempestasPresentation.swift

@@ -1,2 +0,0 @@
-// The Swift Programming Language
-// https://docs.swift.org/swift-book

Packages/TempestasPresentation/Sources/TempestasPresentation/ViewModels/MainViewModel.swift

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+import Foundation
+import Observation
+import TempestasDomain
+
+@Observable
+@MainActor
+public final class MainViewModel {
+    public private(set) var isLoading: Bool = false
+
+    private let forecastRepository: ForecastRepository
+
+    public init(
+        forecastRepository: ForecastRepository
+    ) {
+        self.forecastRepository = forecastRepository
+    }
+}

Packages/TempestasPresentation/Sources/TempestasPresentation/Views/MainView.swift

@@ -0,0 +1,17 @@
+import SwiftUI
+
+public struct MainView: View {
+    let viewModel: MainViewModel
+    
+    public init (
+        viewModel: MainViewModel
+    ) {
+        self.viewModel = viewModel
+    }
+    
+    public var body: some View {
+        NavigationStack {
+            
+        }.frame(width: 320, height: 400)
+    }
+}