[foreignexchange] Code generation: update services and models

[AdyenAutomationBot]

This PR contains the automated changes for the foreignexchange service.

Adyen/adyen-openapi@45520ee

The commit history of this PR reflects the adyen-openapi commits that have been applied.

[gemini-code-assist]

Code Review

This pull request introduces the Foreign Exchange API service to the SDK, adding the RatesApi class for currency exchange calculations along with its corresponding models, typings, and serialization logic. The review feedback highlights a minor formatting issue where the generated models.ts file is missing a trailing newline, suggesting a configuration update to the generator to ensure consistency.

[gemini-code-assist]

The generated model file is missing a trailing newline. According to the repository's general rules, all generated model files in src/typings/ should consistently include a trailing newline. Please configure the generator to ensure a trailing newline is always appended to the generated files.

Suggested change

	export * from "./objectSerializer"
	export * from "./objectSerializer"

References

1. Ensure generated model files (e.g., in src/typings/) consistently include a trailing newline, preferably by configuring the generator rather than applying manual fixes to individual files.