“The Art of Charlie Chan Hock Chye,” by Sonny Liew. (Pantheon ) SINGAPORE-BASED cartoonist Sonny Liew picked up three Eisner Awards stand among the top winners Friday night San Diego, an industry ceremony held conjunction with Comic-Con International. Liew told The Post’s Comic Riffs he was feeling “a mix of elation and disbelief for most part,” and he was “still letting the whole sink ,” after receiving his trifecta of trophies (including for best writer-artist) for his graphic novel “The Art of Charlie Chan Hock Chye” — which traces his nation’s cultural history through the framing device of a fictional cartoonist. Also winning big were American writer Brian K. Vaughan and Canadian artist Fiona Staples, who nabbed four awards for their work on the space opera “Saga.” [ As ‘Saga’ returns, writer Brian K. Vaughan looks to the future — with no immediate end sight ] Issue no. 43 of “Saga,” which commemorated the 25th anniversary of Image Comics. (Courtesy of Image Comics). The evening’s other multiple winners included Marc Andreyko , Erica Henderson, Tom King , Ryan North and Jill Thompson. The cover is “ Is .” (IDW ) “I’m […]