[Feature] Underline & SetCursorWriteString

[RomainDereu]

Hello there!

I've been using this library a lot for a project of mine. I just wanted to share two additional functions that I've been using a lot and might be worth integrating into the main program. They are very lightweight and don't require modifications.

void ssd1306_SetCursor_WriteString(const char* str, ssd1306_Font_t font,
										 ssd1306_COLOR color,
										 uint8_t x_align,
										 uint8_t y_align){
	ssd1306_SetCursor(x_align, y_align);
	ssd1306_WriteString(str, font , color);
}

Very simple but very effective when writing text to avoid making pairings SetCursor WriteString all the time.

void ssd1306_underline_WriteString(const char* str, ssd1306_Font_t font,
										  ssd1306_COLOR color,
										  uint8_t x_align,
										  uint8_t y_align,
										  uint8_t underlined){

	uint8_t line_height = font.height +1;
	ssd1306_SetCursor(x_align, y_align);
	ssd1306_WriteString(str, font , color);
	if(underlined == 1){
		ssd1306_SetCursor(x_align, y_align +1);
		uint8_t line_length = font.width * strlen(str);
		screen_driver_Line(x_align, y_align + line_height,
						   x_align+ line_length, y_align + line_height, White);

	}
}

This one draws an underline based on the value of an int. Very useful to make menuing for selecting different items.

Hope this helps!

[RomainDereu]

I can make the pull request if this is something you guys are interested in