Add examples

[elpiel]

Add more examples in:

• ./examples directory
• Readme & Crate docs (with images, draw inspiration from https://docs.rs/embedded-graphics)

✔️ Cropping - an idea for an example that will show the cropping functionality for a useful use case:

Show a box with an outline and e.g. 3 lines of text. Only the middle line will be fully shown while the others will be partially visible (i.e. cropped) below and above the middle one.

• example provided in Add cropping example #5
• screenshot in commit b91bace

✔️ Transparency - create a shape (e.g. a rectangle) filled with a specific color on the display, then create a canvas, draw anything on it with different color and place it inside the rectangle that's been already drawn on the display.

• Example provided in Added transparency between two objects #6

[TheCre8tor]

I will be working on this project.

[elpiel]

Great @TheCre8tor, you can start by adding 1 example in the /examples directory.
We can later make the screenshots using the simulator display and add them to Readme & lib.rs

[TheCre8tor]

Alright @elpiel, I am already on it.

[TheCre8tor]

Working on the transparency example

[elpiel]

Thanks for the contributions @TheCre8tor !