ohos: Add basic IME and keyboard support (#34188)

* ohos: Add basic IME and keyboard support

- Add extremely basic support for keyboard events
- Add basic IME support
   - Showing and hiding the IME
   - inserting text
   - deleting characters
   - very basic configuration of the IME

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* Apply suggestions from code review

Improve the log message

Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Signed-off-by: Jonathan Schwender <55576758+jschwe@users.noreply.github.com>

* Update ports/servoshell/egl/ohos.rs

Co-authored-by: Mukilan Thiyagarajan <mukilanthiagarajan@gmail.com>
Signed-off-by: Jonathan Schwender <55576758+jschwe@users.noreply.github.com>

* ohos: Bump the minimum required SDK version to 5.0

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* ohos: Remove pub from callbacks

The callbacks don't need to be public, as we will be registering them.

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* Rename composition event

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* ohos: clippy in log

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* ohos: address some clippy warnings

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* ohos: Raise Error in mach if unsupported SDK version is used.

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

* Add keyboard-types dependency for android

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>

---------

Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
Signed-off-by: Jonathan Schwender <55576758+jschwe@users.noreply.github.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Mukilan Thiyagarajan <mukilanthiagarajan@gmail.com>

.github/workflows/ohos.yml

@@ -61,7 +61,7 @@ jobs:
         id: setup_sdk
         uses: openharmony-rs/setup-ohos-sdk@v0.1
         with:
-          version: "4.1"
+          version: "5.0"
           fixup-path: true
       - name: Install node for hvigor
         uses: actions/setup-node@v4