Change style package, new components, ...

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

modal/README.md

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+# modal
+
+A centered popup box on top of a dimmed background, triggered from anywhere in a bubbletea program
+via an exported `tea.Msg` (`ShowMsg`/`Show`), not a direct reference to the `Model` that renders it.
+Composites over an already-rendered string, so it makes no assumption about how the host builds
+that string.
+
+- A modal's content is a `tea.Model`, not a string: it gets `Init`/`Update` while it's on top, and
+  can report back with its own `tea.Msg` (see `modal.Text` for a plain, non-interactive content).
+- The stack is a plain LIFO with no identity. Only the topmost modal is updated; `Close()` always
+  closes it.
+- Showing a second modal while one is open pushes it on top, nesting confirmations naturally.
+- `WithMaxWidth`/`WithMaxHeight` cap growth; a modal narrower than the cap shrinks to fit instead.
+
+See `examples/modal`.