Make sqlite-compatible migration step

pkg/signalmeow/store/upgrades/08-resync-schema-449.sqlite.sql

@@ -0,0 +1,36 @@
+-- v7 -> v8: Migration from https://github.com/mautrix/signal/pull/449 to match the new v8 upgrade
+ALTER TABLE signalmeow_contacts DROP COLUMN profile_avatar_hash;
+
+CREATE TABLE signalmeow_contacts_new (
+    our_aci_uuid        TEXT   NOT NULL,
+    aci_uuid            TEXT   NOT NULL,
+    e164_number         TEXT   NOT NULL,
+    contact_name        TEXT   NOT NULL,
+    contact_avatar_hash TEXT   NOT NULL,
+    profile_key         bytea,
+    profile_name        TEXT   NOT NULL,
+    profile_about       TEXT   NOT NULL,
+    profile_about_emoji TEXT   NOT NULL,
+    profile_avatar_path TEXT   NOT NULL,
+    profile_fetched_at  BIGINT,
+
+    PRIMARY KEY (our_aci_uuid, aci_uuid),
+    FOREIGN KEY (our_aci_uuid) REFERENCES signalmeow_device (aci_uuid) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+INSERT INTO signalmeow_contacts_new
+SELECT our_aci_uuid,
+       aci_uuid,
+       e164_number,
+       contact_name,
+       contact_avatar_hash,
+       profile_key,
+       profile_name,
+       profile_about,
+       profile_about_emoji,
+       profile_avatar_path,
+       CASE WHEN profile_fetch_ts <= 0 THEN NULL ELSE profile_fetch_ts END
+FROM signalmeow_contacts;
+
+DROP TABLE signalmeow_contacts;
+ALTER TABLE signalmeow_contacts_new RENAME TO signalmeow_contacts;