improvement: show errors when writing new sqlite db

Build the sqlite writer pool first, which will provide a better error
message in the event the database is not writeable or readable.

src/repo/sqlite.rs

@@ -53,6 +53,14 @@ pub struct SqliteRepo {
 impl SqliteRepo {
     // build all the pools needed
     #[must_use] pub fn new(settings: &Settings, metrics: NostrMetrics) -> SqliteRepo {
+        let write_pool = build_pool(
+            "writer",
+            settings,
+            OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE,
+            1,
+            2,
+            false,
+        );
         let maint_pool = build_pool(
             "maintenance",
             settings,
@@ -69,14 +77,6 @@ impl SqliteRepo {
             settings.database.max_conn,
             true,
         );
-        let write_pool = build_pool(
-            "writer",
-            settings,
-            OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE,
-            1,
-            2,
-            false,
-        );
 
         // this is used to block new reads during critical checkpoints
         let checkpoint_in_progress = Arc::new(Mutex::new(0));
@@ -852,6 +852,7 @@ pub fn build_pool(
 ) -> SqlitePool {
     let db_dir = &settings.database.data_directory;
     let full_path = Path::new(db_dir).join(DB_FILE);
+
     // small hack; if the database doesn't exist yet, that means the
     // writer thread hasn't finished.  Give it a chance to work.  This
     // is only an issue with the first time we run.