Reorganize schema system structures into separate files

src/source2/schema_system/schema_base_class_info_data.rs

@@ -0,0 +1,11 @@
+use memflow::prelude::v1::*;
+
+use super::SchemaClassInfoData;
+
+#[derive(Pod)]
+#[repr(C)]
+pub struct SchemaBaseClassInfoData {
+    pub offset: u32,                          // 0x0000
+    pad_0004: [u8; 4],                        // 0x0004
+    pub prev: Pointer64<SchemaClassInfoData>, // 0x0008
+}