refactor: move invert Y from glslang_input_t to shader_set_options

glslang/Include/glslang_c_interface.h

@@ -219,7 +219,6 @@ typedef struct glslang_input_s {
     const char* code;
     const char* entrypoint; // This is what actually gets called by the GPU. Best to leave it at 'main' or something so opengl doesn't trip over itself.
     const char* source_entrypoint; // This just renames the source entrypoint in the code to 'entrypoint' and should be what is used to set different entrypoint names.
-    int invert_y;
     int hlsl_functionality_1;
     int default_version;
     glslang_profile_t default_profile;

glslang/Include/glslang_c_shader_types.h

@@ -211,6 +211,7 @@ typedef enum {
     GLSLANG_SHADER_AUTO_MAP_BINDINGS = (1 << 0),
     GLSLANG_SHADER_AUTO_MAP_LOCATIONS = (1 << 1),
     GLSLANG_SHADER_VULKAN_RULES_RELAXED = (1 << 2),
+    GLSLANG_SHADER_INVERT_Y = (1 << 3),
     LAST_ELEMENT_MARKER(GLSLANG_SHADER_COUNT),
 } glslang_shader_options_t;