fix(zterm): export corresponding necessary types

src/terminal.zig

@@ -206,5 +206,5 @@ fn getReportMode(ps: u8) ReportMode {
 }
 
 test {
-    _ = @import("terminal/style.zig");
+    _ = Style;
 }

src/zterm.zig

@@ -4,8 +4,11 @@ const terminal = @import("terminal.zig");
 // public import / exports
 pub const App = @import("app.zig").App;
 pub const Renderer = @import("render.zig");
+
 pub const Key = terminal.Key;
+pub const Position = terminal.Position;
 pub const Size = terminal.Size;
+pub const Style = terminal.Style;
 
 test {
     _ = @import("terminal.zig");