add user management functionality with OTP verification and consent handling, DI introduced

internal/db/migrations/001_init.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS users
+(
+    uuid         UUID PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+    phone_number VARCHAR(20)                                NOT NULL CHECK (phone_number ~ '^\+[0-9]{10,15}$'),
+    created_at   TIMESTAMP        DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    verified     BOOLEAN          DEFAULT FALSE             NOT NULL,
+    verified_at  TIMESTAMP                                  NULL
+
+);