Add entrypoint filtering to the inspect API

[mmarchetti]

Intent

This PR adds the entrypoint parameter to the POST /api/inspect endpoint.

Part of #1847

Type of Change

• • [ ] Bug Fix
• • [x] New Feature
• • [ ] Breaking Change
• • [ ] Documentation
• • [ ] Refactor
• • [ ] Tooling

Approach

Rather than inspecting as usual and then filtering, the entrypoint is passed down to InferType so the inspectors can avoid a lot of I/O when an entrypoint is specified.

Automated Tests

Added tests for when an entrypoint is specified.

Directions for Reviewers

$(just executable-path) ui -vv --listen=localhost:9001 &
curl -s -XPOST -d '{}' 'localhost:9001/api/inspect?dir=test/sample-content/rmd-static-1&entrypoint=index.htm' | jq
curl -s -XPOST -d '{}' 'localhost:9001/api/inspect?dir=test/sample-content/rmd-static-1&entrypoint=static.Rmd' | jq
curl -s -XPOST -d '{}' 'localhost:9001/api/inspect?dir=test/sample-content/rmd-static-1&entrypoint=meta.yaml' | jq

[sagerb]

@mmarchetti , in testing this, I was surprised by the API response for an entry point file that didn't exist... Shouldn't we get an error?

Note: the file simple2.py does not exist.

~/dev/publishing-client-PRs mm-entrypoint-in-inspect-api > curl -s -XPOST -d '{}' 'localhost:9001/api/inspect?dir=test/sample-content/fastapi-simple&entrypoint=simple2.py' | jq
[
  {
    "configuration": {
      "comments": [
        " Configuration file generated by Posit Publisher.",
        " Please review and modify as needed. See the documentation for more options:",
        " https://github.com/posit-dev/publisher/blob/main/docs/configuration.md"
      ],
      "$schema": "https://cdn.posit.co/publisher/schemas/posit-publishing-schema-v3.json",
      "type": "unknown",
      "entrypoint": "simple2.py",
      "validate": true,
      "hasParameters": false,
      "files": [
        "*"
      ],
      "title": "fastapi-simple",
      "python": {
        "version": "3.8.2",
        "packageFile": "requirements.txt",
        "packageManager": "pip"
      },
      "r": {
        "version": "4.3.2",
        "packageFile": "renv.lock",
        "packageManager": "renv"
      }
    },
    "projectDir": "test/sample-content/fastapi-simple"
  }
]