dsc should add it's home directory to PATH to find included resources

[SteveL-MSFT]

Prerequisites

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Summary

dsc will look it it's home directory for resource manifests, but then fails to find the executable since it's not actually in PATH

Steps to reproduce

1. build.ps1
2. ./bin/debug/dsc -l trace config test -p ./dsc/examples/osinfo_parameters.dsc.yaml

Expected behavior

This should succeed

Actual behavior

2024-07-18T20:23:02.440983Z ERROR dsc::subcommand: 137: Error: IO: No such file or directory (os error 2)

This is because although the osinfo resource is found, the osinfo executable isn't found.

dsc should add it's home directory to PATH (if not already there, probably at the end) so that the included resource exes get found on startup.

Discovery should be updated to not look in home directory and just use the new PATH

Error details

No response

Environment data

Name                           Value
----                           -----
PSVersion                      7.5.0-preview.3
PSEdition                      Core
GitCommitId                    7.5.0-preview.3
OS                             Darwin 23.5.0 Darwin Kernel Version 23.5.0: Wed May  1 20:16:51 PDT 2024; root:xnu-10063.121.3~5/RELEASE_ARM64_T8103
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Version

dsc 3.0.0-preview.8

Visuals

No response