Added capacity for #includes in shaders to be wrapped in quotes or diamond brackets (#93)

Author: TheTypholorian

common/src/main/java/foundry/veil/api/client/render/shader/processor/ShaderImportProcessor.java

@@ -30,6 +30,11 @@ public void modify(Context ctx, GlslTree tree) throws IOException, GlslSyntaxExc
         }
         for (String directive : imports) {
             String importId = directive.substring(ShaderImportProcessor.INCLUDE_KEY.length()).trim();
+
+            if ((importId.startsWith("\"") && importId.endsWith("\"")) || (importId.startsWith("<") && importId.endsWith(">"))) {
+                importId = importId.substring(1, importId.length() - 1);
+            }
+
             try {
                 ctx.include(tree, ResourceLocation.parse(importId), IncludeOverloadStrategy.SOURCE);
             } catch (ResourceLocationException e) {