Add route to create inbox entries

moneymgr_backend/migrations/2025-03-17-173101_initial_structure/up.sql

@@ -67,7 +67,10 @@ CREATE TABLE inbox
     id          SERIAL PRIMARY KEY,
     file_id     INTEGER NOT NULL REFERENCES files ON DELETE RESTRICT,
     user_id     INTEGER NOT NULL REFERENCES users ON DELETE CASCADE,
-    account_id  INTEGER REFERENCES accounts ON DELETE CASCADE,
+    movement_id INTEGER NULL REFERENCES movements ON DELETE CASCADE,
+    time        BIGINT  NOT NULL,
+    label       VARCHAR(200) NULL,
+    amount      REAL NULL,
     time_create BIGINT  NOT NULL,
     time_update BIGINT  NOT NULL
 );