libhsmd: First working build script for libhsmd-python

Changelog-Added: libhsmd: Added python bindings for `libhsmd`

contrib/libhsmd_python/shims.c

@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include <stdbool.h>
+
+/* The following functions are for some reason referenced but not
+ * included in the library. We provide them with dummy implementations
+ * here. */
+bool alignment_ok(void *p) { return true; }
+void dev_disconnect_init(int fd) {}
+void CCAN_CLEAR_MEMORY(void *p, size_t len) { wally_clear(p, len); }