[SPE-4405] Normalize source input location path between Windows and Unix

[nielthiart]

When a new SDK is created in a Windows environment, the sources[*].inputs[*].location in .speakeasy/workflow.yaml uses backslash in relative paths to address the input file.

If the same SDK is later regenerated on macOS/Linux using speaskeasy run, the input location can't be resolved.

Steps

1. Use Windows
2. Create a new SDK using speakeasy quickstart, referencing a local OpenAPI document as source.
3. Transfer parent folder of SDK with OpenAPI document and SDK to Linux/macOS.
4. On Linux/macOS, in the SDK directory, run speakeasy run

Expected result

SDK regenerates from the OpenAPI document in the parent folder.

Actual result

❯ speakeasy run
failed to validate target test-django: failed to validate source TestDjango-OAS: failed to get output location: input file ..\openapi.yaml does not exist

Workaround

Updating the path in .speakeasy/workflow.yaml to use slashes instead of backslashes resolves this for macOS/Linux users.

_SPE-4405

[simplesagar]

Thanks for the report Niel !