IaC Extractor: Windows Support

[dilanbhalla]

• tested extraction and tests locally (most tests pass, handful of failures probably worth further investigation/debugging)
• attempted to update pipelines to build/test for windows as well

[Copilot]

Pull Request Overview

This PR adds Windows support to the CodeQL IAC extractor by creating PowerShell equivalents of existing bash scripts and enabling Windows in CI/CD workflows.

• Adds PowerShell scripts for Windows: create-extractor-pack.ps1, run-tests.ps1, and install-extractor.ps1
• Updates CI/CD workflows to include Windows platform in the build matrix
• Updates extractor configuration to support additional file extensions (.tfvars, .bicep) and changes language identifier from "hcl" to "iac"

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tools/qltest.cmd	Added .tfvars and .bicep file extensions; changed language from "hcl" to "iac"
tools/index-files.cmd	Added "extract" subcommand to extractor invocation
scripts/run-tests.ps1	New PowerShell script for running tests on Windows
scripts/install-extractor.ps1	New PowerShell script for installing extractor on Windows
scripts/create-extractor-pack.ps1	Rewritten PowerShell script with improved structure and error handling
.github/workflows/publish.yml	Added Windows to build matrix and fixed typo in "Download"
.github/workflows/build.yml	Added Windows to test matrix with platform-specific build and test steps

Comments suppressed due to low confidence (1)

.github/workflows/build.yml:63

• Corrected spelling of 'extensions' to 'extension'. The command should be 'gh extension install' not 'gh extensions install'.

          gh extensions install github/gh-codeql

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[Copilot]

Inconsistent indentation: Line 8 uses tabs while most other lines in the file use spaces. This line should use spaces to match the rest of the file's indentation style.

Suggested change

	$CODEQL_BINARY = "codeql"
	$CODEQL_BINARY = "codeql"

[Copilot]

Inconsistent indentation: Line 15 uses a leading space before 'catch' while other lines use tabs or no leading space. This should be aligned consistently with the surrounding try-catch block.

Suggested change

	catch {
	catch {

[Copilot]

Inconsistent indentation: Lines 22-23 use tabs while most other lines in the file use spaces. These lines should use spaces to match the rest of the file's indentation style.

Suggested change

	Write-Error "Neither 'codeql' nor 'gh' command found"
	exit 1
	Write-Error "Neither 'codeql' nor 'gh' command found"
	exit 1

[aegilops]

This line is causing a syntax error and failing