make v9 footer compilable with c++

[tilchl]

Nested/duplicate designators are not allowed in C++20.
Reordering the designators is also necessary for adhering to the standard.
Changing these lines in the following way would make the image compilable in C and C++

lv_img_conv/lib/convert.ts

Lines 136 to 144 in 80ed17a

	$c_footer = `\n};\n
	const lv_image_dsc_t ${out_name} = {
	.header.cf = ${header_cf},
	.header.magic = LV_IMAGE_HEADER_MAGIC,
	.header.w = ${this.w},
	.header.h = ${this.h},
	.data_size = ${data_size},
	.data = ${out_name}_map,
	};\n`;

Change to

             $c_footer = `\n};\n 
 const lv_image_dsc_t ${out_name} = {
   .header = {
       .magic = LV_IMAGE_HEADER_MAGIC, 
       .cf = ${header_cf}, 
       .w = ${this.w}, 
       .h = ${this.h},
    },
   .data_size = ${data_size}, 
   .data = ${out_name}_map, 
 };\n`; 

Thanks for the converter anyway, really handy 😍

ps: could also make a pull request for this