add(example): input with simple text field

examples/layout.zig

@@ -5,7 +5,7 @@ const App = zterm.App(union(enum) {
     send: []u21,
 });
 
-const log = std.log.scoped(.example);
+const log = std.log.scoped(.default);
 
 pub const InputField = struct {
     // TODO: I would need the following features:
@@ -67,10 +67,6 @@ pub const InputField = struct {
         for (this.input.items, 0..) |cp, idx| {
             cells[(row * size.cols) + col + idx].style.fg = .black;
             cells[(row * size.cols) + col + idx].cp = cp;
-            // NOTE: line wrapping happens automatically due to the way the container cells are constructed
-            // - it would also be possible to limit the line to cols you want to display (i.e. then only for a single row)
-            // - for areas you would rather go ahead and create another
-            //   container and fit the text inside of that container (so it is dynamic to the screen size, etc.)
 
             // NOTE: do not write over the contents of this `Container`'s `Size`
             if ((row * size.cols) + col + idx == cells.len - 1) break;
@@ -83,12 +79,9 @@ pub fn main() !void {
 
     // TODO: maybe create own allocator as some sort of arena allocator to have consistent memory usage
     var gpa: std.heap.GeneralPurposeAllocator(.{}) = .init;
-    defer {
-        const deinit_status = gpa.deinit();
-        if (deinit_status == .leak) {
-            log.err("memory leak", .{});
-        }
-    }
+    defer if (gpa.deinit() == .leak) {
+        log.err("memory leak", .{});
+    };
     const allocator = gpa.allocator();
 
     var app: App = .init;