ascii-image-converter: add page (#16272)

pages/common/ascii-image-converter.md

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+# ascii-image-converter
+
+> Convert an image into ASCII.
+> More information: <https://github.com/TheZoraiz/ascii-image-converter#cli-usage>.
+
+- Convert an image into ASCII:
+
+`ascii-image-converter {{path/to/image|URL}}`
+
+- Colorize the output:
+
+`ascii-image-converter {{[-C|--color]}} {{path/to/image|URL}}`
+
+- Create a tresholded image using braille:
+
+`ascii-image-converter {{[-b|--braille]}} {{path/to/image|URL}}`
+
+- Display the image with negative colors:
+
+`ascii-image-converter {{[-Cn|--color --negative]}} {{path/to/image|URL}}`
+
+- Use a wider range of characters to display an image (may improve image accuracy):
+
+`ascii-image-converter {{[-c|--complex]}} {{path/to/image|URL}}`