Release Notes:
- N/A
----
Continue #14044 for Windows
## The problem
The `cx.open_window` method has provided us a `window_kind` option to
allows creating a Popup kind. This behavior can work on macOS, the popup
kind window have no-border, no-shadow, no-resize, and followed the
`is_movable` if present true it can't move.
This PR to fix those supports on Windows.
The border and shadow still exist, I have tried to use WS_POPUP
window_style, but it will crash:
> This is looks like complex, it is out of my known.
```
Blocking waiting for file lock on build directory
Compiling gpui v0.1.0 (F:\work\zed\crates\gpui)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.96s
Running `target\debug\examples\window_positioning.exe`
thread 'main' panicked at F:\Users\jason\.cargo\git\checkouts\blade-b2bcd1de1cf7ab6a\21a56f7\blade-graphics\src\vulkan\init.rs:864:18:
called `Result::unwrap()` on an `Err` value: ERROR_OUT_OF_DEVICE_MEMORY
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
error: process didn't exit successfully: `target\debug\examples\window_positioning.exe` (exit code: 0xc0000409, STATUS_STACK_BUFFER_OVERRUN)
```
So I just make a simple change, to use `WS_EX_TOOLWINDOW` this can
disable resize, and connect `is_movable` to `handle_hit_test_msg` to
disable move, and also no Status Bar icon.
## Before
https://github.com/zed-industries/zed/assets/5518/76740a71-e0ba-401f-958d-f4afdeb417c6
## After
https://github.com/zed-industries/zed/assets/5518/dca49f13-914c-425a-b8b6-b9fc15f8d208
Jason Lee
1887a6db53