Add OnScreen Virtual KeyBoard

[lexcorp]

Great work. I loved setting this up. Just a quick question - is there a way for me to add letters to the keypad. I see you have provisioned Numbers, letters would be awesome.

                <div class="grid-container-keypad">
                    <button class="btn-keypad ripple" @click=${() => this._button("1")}>1</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("2")}>2</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("3")}>3</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("4")}>4</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("5")}>5</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("6")}>6</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("7")}>7</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("8")}>8</button>
                    <button class="btn-keypad ripple" @click=${() => this._button("9")}>9</button>
                    <button class="btn-keypad"></button>
                    <button class="btn-keypad ripple" @click=${() => this._button("0")}>0</button>
                    <button class="btn-keypad"></button>
              </div>

https://webostv.developer.lge.com/design/webos-tv-system-ui/virtual-keyboard/

https://github.com/webOS-TV-app-samples/VirtualKeyboard

webOS TV provides the system keyboard which is automatically displayed on the webOS TV screen if you let your cursor in the text window. The system keyboard is called the virtual keyboard for webOS TV. The virtual keyboard is the primary text input method for the webOSTV app, and you can customize it as the following types.

[bkbartk]

this would be really nice, but I doubt this is possible, because the default LG implementation in HA doesn't support letters and I tried, and in my test this doesn't work either, So I think the integration needs to be updated first, if this is not a limitation on the tv itself.