feat: add TestModeParameter type to replace inline testmode definitions

[janpaepke]

Summary

• Adds TestModeParameter interface to src/types/parameters.ts, mirroring the existing SortParameter approach
• Replaces all inline testmode?: boolean definitions across 19 binder parameter files with extends/intersections of the shared type
• Empty interfaces that only contained testmode were converted to intersected type aliases

[Copilot]

Pull request overview

This PR introduces a shared TestModeParameter type in src/types/parameters.ts and refactors binder parameter types across the codebase to reuse it instead of duplicating testmode?: boolean inline.

Changes:

• Added TestModeParameter to src/types/parameters.ts.
• Replaced inline testmode?: boolean definitions across multiple binder parameter files with TestModeParameter via extends/intersections.
• Converted a few “testmode-only” interfaces into equivalent type aliases that reference the shared type.

Reviewed changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/types/parameters.ts	Adds TestModeParameter and updates the limit pagination doc comment.
src/binders/terminals/parameters.ts	Refactors paging params to include TestModeParameter via intersection.
src/binders/subscriptions/payments/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/subscriptions/parameters.ts	Refactors page params to include TestModeParameter.
src/binders/refunds/parameters.ts	Refactors page params to include TestModeParameter.
src/binders/refunds/orders/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/payments/routes/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/payments/refunds/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/payments/parameters.ts	Refactors multiple exported parameter types to reuse TestModeParameter (and converts a couple interfaces to type aliases).
src/binders/payments/orders/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/payments/captures/parameters.ts	Refactors get/page params to include TestModeParameter.
src/binders/paymentLinks/parameters.ts	Refactors create/get/page/update params to reuse TestModeParameter via a shared context alias.
src/binders/orders/shipments/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/orders/parameters.ts	Refactors create/get/update/page/cancel params to reuse TestModeParameter.
src/binders/orders/orderlines/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/methods/parameters.ts	Refactors get/list params to extend TestModeParameter.
src/binders/customers/subscriptions/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/customers/parameters.ts	Refactors common context params to alias TestModeParameter.
src/binders/customers/mandates/parameters.ts	Refactors context params to extend TestModeParameter.
src/binders/balance-transfers/parameters.ts	Refactors context params to alias TestModeParameter.

Comments suppressed due to low confidence (1)

src/types/parameters.ts:13

• This PR also changes the PaginationParameters.limit documentation from “Defaults to 250” to “Defaults to 50. Maximum 250.” Please confirm this matches the Mollie API behavior and update the PR description (or revert) so consumers aren’t misled by an unintended doc change.

  /**
   * The number of resources to return per page. Defaults to 50. Maximum 250.
   *
   * @see https://docs.mollie.com/reference/pagination
   */
  limit?: number;

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[edorivai]

LGTM, nice cleanup