feat(settings): add settings menu and checkbox for autosave

relates to #35

src/main/kotlin/com/github/xetra11/ck3workbench/app/SettingsHolder.kt

@@ -1,9 +1,15 @@
 package com.github.xetra11.ck3workbench.app
 
 import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.setValue
 import com.github.xetra11.ck3workbench.module.character.CK3Character
 
+/**
+ * Holds all the app wide settings state
+ */
 object SettingsHolder {
-    val characters: SnapshotStateList<CK3Character> = mutableStateListOf()
+    var autosave by mutableStateOf(false)
 }

src/main/kotlin/com/github/xetra11/ck3workbench/app/ViewManager.kt

@@ -25,6 +25,7 @@ object ViewManager {
         CHARACTER_VIEW,
         CHARACTER_CREATE_VIEW,
         ENTRY_VIEW,
-        DYNASTY_VIEW
+        DYNASTY_VIEW,
+        SETTINGS_VIEW
     }
 }

src/main/kotlin/com/github/xetra11/ck3workbench/app/view/CurrentMainView.kt

@@ -3,6 +3,7 @@ package com.github.xetra11.ck3workbench.module.character.view
 import androidx.compose.runtime.Composable
 import com.github.xetra11.ck3workbench.app.ViewManager
 import com.github.xetra11.ck3workbench.app.view.EntryView
+import com.github.xetra11.ck3workbench.app.view.SettingsView
 
 @Composable
 fun CurrentMainView() {
@@ -11,5 +12,6 @@ fun CurrentMainView() {
         ViewManager.View.DYNASTY_VIEW -> DynastieModuleView()
         ViewManager.View.CHARACTER_VIEW -> CharacterModuleView()
         ViewManager.View.CHARACTER_CREATE_VIEW -> CharacterFactoryView()
+        ViewManager.View.SETTINGS_VIEW -> SettingsView()
     }
 }

src/main/kotlin/com/github/xetra11/ck3workbench/app/view/SettingsView.kt

@@ -1,4 +1,35 @@
 package com.github.xetra11.ck3workbench.app.view
 
-class SettingsView {
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.Checkbox
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.github.xetra11.ck3workbench.app.SettingsHolder
+
+@Composable
+fun SettingsView() {
+    Column(
+        Modifier.fillMaxWidth(),
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        Spacer(Modifier.padding(top = 100.dp))
+        Row(
+            Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceEvenly
+        ) {
+            Text("Activate Autosave")
+            Checkbox(
+                checked = SettingsHolder.autosave,
+                onCheckedChange = { SettingsHolder.autosave = it }
+            )
+        }
+    }
 }

src/main/kotlin/main.kt

@@ -128,6 +128,15 @@ private fun AppMenu(): MenuBar {
                     // DialogManager.openDialog(DialogManager.Dialog.CHARACTER_EXPORT)
                 }
             )
+        ),
+        Menu(
+            "Settings",
+            MenuItem(
+                "Application Settings",
+                onClick = {
+                    ViewManager.changeView(ViewManager.View.SETTINGS_VIEW)
+                }
+            )
         )
     )
 }