Add warning about using libsql and sqlite-vec at the same time

Author: ospfranco

op-sqlite.podspec

@@ -77,10 +77,14 @@ if phone_version then
   end
 
   if use_sqlite_vec then
-    raise "SQLite Vec is not supported with phone version. It cannot load extensions."
+    raise "sqlite-vec is not supported with phone version. It cannot load extensions."
   end
 end
 
+if use_libsql and use_sqlite_vec then
+    raise "You cannot use sqlite-vec with libsql. libsql already has vector search included."
+end
+
 Pod::Spec.new do |s|
   s.name         = "op-sqlite"
   s.version      = package["version"]
@@ -184,6 +188,9 @@ Pod::Spec.new do |s|
 
   if use_libsql then
     xcconfig[:GCC_PREPROCESSOR_DEFINITIONS] += " OP_SQLITE_USE_LIBSQL=1"
+    if use_sqlite_vec then
+      
+    end
     if use_crsqlite then
       frameworks = ["ios/libsql_experimental.xcframework", "ios/crsqlite.xcframework"]
     else