samples: create an OLED example

[DhruvaG2000]

Is your enhancement proposal related to a problem? Please describe.
There is no existing example to help get started with OLED modules like SSD1306. An example that demonstrates the use of lvgl would also be really useful.

Describe the solution you'd like
Write an example that will display "Hello World" on any display module connected via IIC to any board, since ```LVGL`` is a generic library/ module.

Describe alternatives you've considered
Something similar to u8g2 example can be provided within samples/drivers/.

Additional context
N/A.

[jfischer-no]

We do not need samples for this specific display technology.
We have generic samples for cfb, lvgl: samples/subsys/display and display controller driver API: samples/drivers/display.

https://docs.zephyrproject.org/latest/samples/subsys/display/lvgl/README.html

[gmarull]

I agree that display samples don't need to be dependent on a particular technology, but rather on API/libraries. One could use the same to display content on devices made using LCD or OLED technologies.

Closing this issue, as there are existing samples that can be used (samples/subsys/display/*).