Merge bitcoin/bitcoin#28040: wallet: sqlite: don't include sqlite files from our headers

bea9fc2 wallet: sqlite: force sqlite3.h to be included by the cpp files (Cory Fields)

Pull request description:

  Only `#include` upstream sqlite headers from our cpp files.

  Like #28039 but simpler :)

ACKs for top commit:
  achow101:
    ACK bea9fc2
  TheCharlatan:
    Nice, ACK bea9fc2
  kristapsk:
    utACK bea9fc2
  hebasto:
    ACK bea9fc2, I have reviewed the code and it looks OK.

Tree-SHA512: cb83ac51eed7e0740f1c75ee87c7849fa7e535bc4836c499290041eb995ccfd82533e3babfe83a164257b62b180f206112d6a1bae7ea290ad0ec7f55d62432da

Author: fanquake

src/wallet/sqlite.h

@@ -8,10 +8,11 @@
 #include <sync.h>
 #include <wallet/db.h>
 
-#include <sqlite3.h>
-
 struct bilingual_str;
 
+struct sqlite3_stmt;
+struct sqlite3;
+
 namespace wallet {
 class SQLiteDatabase;