Renamed service to api

api/migrations/000001_metars/down.sql

@@ -0,0 +1 @@
+DROP TABLE metars;

api/migrations/000001_metars/up.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS metars (
+  id INTEGER PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+  icao TEXT NOT NULL,
+  observation_time TIMESTAMP NOT NULL,
+  raw_text TEXT NOT NULL,
+  data JSONB NOT NULL
+);