feat: respect maximize config on macOS (#5962)

Resolve #5928

macos/Sources/Features/Terminal/TerminalController.swift

@@ -375,7 +375,11 @@ class TerminalController: BaseTerminalController {
         // If we have only a single surface (no splits) and that surface requested
         // an initial size then we set it here now.
         if case let .leaf(leaf) = surfaceTree {
-            if let initialSize = leaf.surface.initialSize,
+            if config.maximize {
+                if let screen = window.screen ?? NSScreen.main {
+                    window.setFrame(screen.visibleFrame, display: true)
+                }
+            } else if let initialSize = leaf.surface.initialSize,
                let screen = window.screen ?? NSScreen.main {
                 // Get the current frame of the window
                 var frame = window.frame

macos/Sources/Ghostty/Ghostty.Config.swift

@@ -514,6 +514,14 @@ extension Ghostty {
             _ = ghostty_config_get(config, &v, key, UInt(key.count))
             return v
         }
+
+        var maximize: Bool {
+            guard let config = self.config else { return true }
+            var v = false;
+            let key = "maximize"
+            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            return v
+        }
     }
 }