`cargo-wdk`: File-based configuration for build and packaging options

[svasista-ms]

Currently, cargo-wdk exposes CLI options to configure the build, e.g. --target-architecture, --target-platform, --stampinf-args. There is no way, other than the full cargo wdk build invocation, to specify/record how a particular driver must be built.

For e.g. if a driver is built with

cargo wdk build --target-platform desktop --sample --inf2cat-args '/os:10_x64'

Developers and CI must know and use exact command. Further, the passthrough flags take raw quoted strings which could lead to long command lines. With workspaces, mixed workspaces (driver + non-driver) the problem becomes larger.

In order to cater to these issues, cargo-wdk can support a way to configure the build and packaging options through a file, so that plain cargo wdk build produces a correct package.

[jdoubleu]

I would suggest something similar to the .cargo/config.toml mechanism. Not sure if we could use the .cargo/ folder and e.g. place a wdk.toml in there or if it's reserved. Since it is a cargo subcommand it would make sense and feels natural.