Method drawChar2

include/VectorDisplay.h:575–575

    int16_t drawString(const char *string, int32_t x, int32_t y) {    };

    int16_t  drawChar2(uint16_t uniCode, int32_t x, int32_t y, uint16_t a, uint16_t b) {    }
                   
        // TODO: fix back color handling
    size_t write(uint8_t c) override {    }