feat: add invoice and alternative_componen management functionality

db/queries/invoice.sql

@@ -0,0 +1,40 @@
+-- name: GetInvoiceByID :one
+SELECT * FROM invoices
+WHERE id = sqlc.arg(id);
+
+-- name: ListInvoices :many
+SELECT * FROM invoices
+ORDER BY created_at DESC;
+
+-- name: CreateInvoice :one
+INSERT INTO invoices (type, status, invoice_config_id, total_items, note, created_by, approved_by, created_at, metadata)
+VALUES (
+    sqlc.arg(type),
+    sqlc.arg(status),
+    sqlc.arg(invoice_config_id),
+    sqlc.arg(total_items),
+    sqlc.arg(note),
+    sqlc.arg(created_by),
+    sqlc.arg(approved_by),
+    sqlc.arg(created_at),
+    sqlc.arg(metadata)
+)
+RETURNING *;
+
+-- name: UpdateInvoice :one
+UPDATE invoices
+SET type = coalesce(sqlc.arg(type), type),
+    status = coalesce(sqlc.arg(status), status),
+    invoice_config_id = coalesce(sqlc.arg(invoice_config_id), invoice_config_id),
+    total_items = coalesce(sqlc.arg(total_items), total_items),
+    note = coalesce(sqlc.arg(note), note),
+    metadata = coalesce(sqlc.arg(metadata), metadata),
+    updated_at = sqlc.arg(updated_at)
+WHERE id = sqlc.arg(id)
+RETURNING *;
+
+-- name: DeleteInvoice :execrows
+DELETE FROM invoices
+WHERE id = sqlc.arg(id);
+
+