feat(18-01): add the cabana money field (task 1)

- type: money on fields.yaml with currency or currencyFrom, scale (2..4,
  default 4) and max; boot fails naming the field on two sources, none,
  a bad scale or max, a column that is not a string or a Scanner/Valuer,
  or a currencyFrom that is not a string column
- a save answers 422 money.invalid, money.too_precise or money.too_large
  on the field and fills the accepted decimal string unchanged; the same
  check runs on controller, settings and relation child saves
- backend::lang money.* phrases in en and pl
- admin SPA: money.ts (parseMoneyInput, trimMoneyDisplay, formatMoney over
  Intl with the string itself), MoneyField.vue with the currency suffix,
  blur validation and the read-only box, preview through the control,
  the field scope on PreviewView; regenerated OpenAPI and TS types,
  rebuilt modules/boardwalk/dist
- acme.payments fixture with TestMoneyFieldCompile and the Docker
  TestMoneyFieldSmoke; forms.md Money section and cabana README

admin/src/api/schema.d.ts

@@ -5592,6 +5592,16 @@ export interface components {
             };
             comment?: string;
             context?: components["schemas"]["cabana.fieldContext"];
+            /**
+             * @description Currency is the ISO 4217 code a `type: money` field shows as its
+             *     suffix; exactly one of Currency and CurrencyFrom is set.
+             */
+            currency?: string;
+            /**
+             * @description CurrencyFrom names the sibling column of the model whose value is the
+             *     money field's currency code; the admin follows that field's value.
+             */
+            currencyFrom?: string;
             default?: components["schemas"]["cabana.jsonScalar"];
             /**
              * @description Deferrable is true on a relation-manager field whose relation can be
@@ -5634,6 +5644,11 @@ export interface components {
             /** @description ImageWidth and ImageHeight are the preview size of an image upload. */
             imageWidth?: number;
             label?: string;
+            /**
+             * @description Max is a money field's column ceiling as a decimal string; a value
+             *     above it in absolute magnitude is a 422 money.too_large.
+             */
+            max?: string;
             maxDate?: string;
             /** @description MaxFiles caps the number of files of an attachMany field. */
             maxFiles?: number;
@@ -5690,6 +5705,11 @@ export interface components {
             readOnly?: boolean;
             relation?: string;
             required?: boolean;
+            /**
+             * @description Scale is the most fraction digits a money value may carry, 2 to 4
+             *     (default 4). A value with more digits is refused, never rounded.
+             */
+            scale?: number;
             size?: string;
             span?: string;
             tab?: string;