use a single cImport

Two cImport calls generate incompatible code: we can't use the structs
generated in sqlite.zig in functions in errors.zig for example

Up until now it wasn't actually a problem since in errors.zig we only
ever used constants which does work, but now we want to introduce
functions in this file.

1 files changed, 3 insertions, 0 deletions

diff --git a/c.zig b/c.zig
new file mode 100644
index 0000000..a346a3a
--- /dev/null
+++ b/c.zig
@@ -0,0 +1,3 @@
+pub const c = @cImport({
+    @cInclude("sqlite3.h");
+});