feature request: Use Environment variables for secrets capabilities

[itkhanz]

Current Behavior

Currently, I have different JSON capabilities for starting Appium Session using Appium Inspector. For iOS applications on real device, we need to pass appium:xcodeOrgId and appium:xcodeSigningId as a session capability. Currently this is hard-coded in all the session capabilities and being repeated across all the sessions. This is not so nice when sharing these capabilities across different teams result in leakage of such secrets. There should be some way to hide or mask these capabilities values.

Suggested Solution

Ideally these secrets should not be visible in session capabilities, and there should be a way for Appium Inspector to read these values from environment variables.
Possible solution could look like:-

Passing these capabilities as appium:xcodeOrgId = {$XCODE_ORG_ID} where value within brace is treated as environment variable and loaded accordingly.

Or maybe we could add another dropdown option next to capability key that has option of environment variable for the type of capability and as value of this capability then we simply pass the name of environment variable.

Or alternatively there should be a way to store these secrets in Appium Inspector itself just like how tools like Postman allow user to store secrets and then use them in tool.

Additional Information

Additionally, a rather simple UI enhancement can be to have a checkmark next to such secrets capabilities that when checked masks the capability value.

[eglitise]

I like this idea, though this information will not be hidden from the Appium server logs (unless the server is explicitly instructed to hide it). It would still make it safer to share such capabilities, though.