doc: lack of official logo of GGML

[zhouwg]

An official logo for whisper.cpp already exists

An official logo for llama.cpp already exists

it seems there is lack of official logo of GGML

[Green-Sky]

maybe we can ask HF if we can lean on their icon for ggml/gguf.

(it's an embedded svg, so here is a screen cap)

[zhouwg]

maybe we can ask HF if we can lean on their icon for ggml/gguf.

(it's an embedded svg, so here is a screen cap)

thanks.

[julien-c]

happy to provide a SVG or any other file format export it it's useful (cc: @gary149)

[zhouwg]

thanks so much.