Move logic from LcdMenu to items

[ShishkinDmitriy]

Initial move, main changes are here. I tried to remove unneccessaty changes, had to add setBacklight method because of example.

[ShishkinDmitriy]

Had to comment test:

// unittest(no_text_off_on_for_item_input) {
//     assertNull((static_cast<ItemInput*>(mainMenu[ITEM_INPUT_INDEX]))->getTextOn());
//     assertNull((static_cast<ItemInput*>(mainMenu[ITEM_INPUT_INDEX]))->getTextOff());
// }

Because base class MenuItem has no that method, only specific ItemInput class has.

[forntoh]

⚠️ Found an issue while testing InputRotary Example, I believe CharsetInput is also affected.

With this PR

https://github.com/user-attachments/assets/eb2f6760-fc6a-4d2e-9f4f-44369249af7e

With master,

https://github.com/user-attachments/assets/0ad7573e-669b-4a72-af88-e024a2fdb4ab

Please investigate this. [Tip: Check your drawChar function it shouldn't update the blinker position]

[ShishkinDmitriy]

What a great review) Thanks. I will fix it. Regarding charset input.. I think it should be one more implementation of MenuItem let's say ItemCharsetInput. If ItemIniput listen for left, right, type, backspace. The ItemCharsetInput should listen left, right, up, down, backspace. Then method drawChar will be eliminated - it was hard for me to understand the difference between type and drawChar initially.

[ShishkinDmitriy]

Ok, I have added ItemInputCharset, so it required some changes in SimpleNavConfig

[ShishkinDmitriy]

In last commit I have added ItemInputCharsetSimple (name can be better.. tried to emphasize that only left/right dimensions are available) - implementation of charset input where need to enter to start select char and instead of up and down actions right and left are used, so it's implementation for Rotary encoder.

[forntoh]

Hey @ShishkinDmitriy, while reviewing your PR, I'd suggest the following code changes:

👉 Code Suggestion for #193

https://github.com/forntoh/LcdMenu/pull/193

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