Enable SQLite column metadata

Build Unix SQLite with SQLITE_ENABLE_COLUMN_METADATA so the metadata APIs are available on macOS and Linux.

Remove the pdo_sqlite configure override that forced PHP to treat sqlite3_column_table_name() as unavailable, and add sanity checks for both SQLite compile options and PDO column metadata.

src/SPC/builder/unix/library/sqlite.php

@@ -10,7 +10,12 @@ trait sqlite
 {
     protected function build(): void
     {
-        UnixAutoconfExecutor::create($this)->configure()->make();
+        UnixAutoconfExecutor::create($this)
+            ->appendEnv([
+                'CFLAGS' => '-DSQLITE_ENABLE_COLUMN_METADATA=1',
+            ])
+            ->configure()
+            ->make();
         $this->patchPkgconfPrefix(['sqlite3.pc']);
     }
 }