chore: import upstream snapshot with attribution

bootstrap/sql/migrations/native/1.8.0/mysql/schemaChanges.sql

@@ -0,0 +1,23 @@
+ALTER TABLE background_jobs
+ADD COLUMN runAt BIGINT;
+
+CREATE INDEX background_jobs_run_at_index ON background_jobs(runAt);
+
+
+
+CREATE TABLE IF NOT EXISTS data_contract_entity (
+  id VARCHAR(36) GENERATED ALWAYS AS (json ->> '$.id') STORED NOT NULL,
+  name VARCHAR(256) GENERATED ALWAYS AS (json ->> '$.name') NOT NULL,
+  fqnHash VARCHAR(768) NOT NULL,
+  json JSON NOT NULL,
+  updatedAt BIGINT UNSIGNED GENERATED ALWAYS AS (json ->> '$.updatedAt') NOT NULL,
+  updatedBy VARCHAR(256) GENERATED ALWAYS AS (json ->> '$.updatedBy') NOT NULL,
+  deleted BOOLEAN GENERATED ALWAYS AS (json -> '$.deleted') NOT NULL,
+  PRIMARY KEY (id),
+  UNIQUE (fqnHash),
+  INDEX (name)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
+
+-- Add index for deleted flag
+ALTER TABLE data_contract_entity ADD INDEX index_data_contract_entity_deleted(deleted);
+