Use plain C for CSQLiteExtensions module

Author: sbooth

Sources/CSQLiteExtensions/CSQLiteExtensions.swift

@@ -0,0 +1 @@
+

Sources/CSQLiteExtensions/dummy.c

@@ -0,0 +1,45 @@
+/*
+ ** 2025-05-30
+ **
+ ** The author disclaims copyright to this source code.  In place of
+ ** a legal notice, here is a blessing:
+ **
+ **    May you do good and not evil.
+ **    May you find forgiveness for yourself and forgive others.
+ **    May you share freely, never taking more than you give.
+ **
+ ******************************************************************************
+ **
+ ** Functions to manage automatic database extension registration from Swift.
+ */
+
+// MARK: - Database extensions
+// See https://sqlite.org/loadext.html
+
+#if __has_include("csqlite_carray_extension.h")
+#include "csqlite_carray_extension.h"
+#endif
+
+#if __has_include("csqlite_decimal_extension.h")
+#include "csqlite_decimal_extension.h"
+#endif
+
+#if __has_include("csqlite_ieee754_extension.h")
+#include "csqlite_ieee754_extension.h"
+#endif
+
+#if __has_include("csqlite_percentile_extension.h")
+#include "csqlite_percentile_extension.h"
+#endif
+
+#if __has_include("csqlite_series_extension.h")
+#include "csqlite_series_extension.h"
+#endif
+
+#if __has_include("csqlite_sha3_extension.h")
+#include "csqlite_sha3_extension.h"
+#endif
+
+#if __has_include("csqlite_uuid_extension.h")
+#include "csqlite_uuid_extension.h"
+#endif

Sources/CSQLiteExtensions/include/csqlite_extensions.h

@@ -0,0 +1,4 @@
+module CSQLiteExtensions {
+	header "csqlite_extensions.h"
+	export *
+}