chore: Add VS Code recommended extensions, settings, and build tasks

[PlagueHO]

Summary

Add the standard VS Code workspace configuration files aligned with SqlServerDsc.

Files to create

.vscode/extensions.json

{
    "recommendations": [
        "davidanson.vscode-markdownlint",
        "pspester.pester-test",
        "ms-vscode.powershell",
        "streetsidesoftware.code-spell-checker"
    ]
}

.vscode/tasks.json

Label	Build group	Command
noop	—	./build.ps1 -Tasks noop
build	build (default)	./build.ps1 -AutoRestore -Tasks build
test	test (default)	./build.ps1 -Tasks noop; Invoke-Pester -Path './tests/Unit' -Output Detailed
test-with-coverage	test	Unit tests with coverage
hqrmtest	—	./build.ps1 -AutoRestore -Tasks hqrmtest -CodeCoverageThreshold 0

Include problemMatcher and presentation settings. Adapt test paths to tests/Unit/DSCResources/. Reference: SqlServerDsc tasks.json.

.vscode/settings.json

Based on SqlServerDsc settings.json: PowerShell formatting, PSScriptAnalyzer, Pester, useInstructionFiles: true, cSpell with FileContentDsc-relevant words (no SQL Server terms), pwsh terminal profiles.

.vscode/analyzersettings.psd1

Based on SqlServerDsc analyzersettings.psd1 — remove SqlServerDsc-specific custom rule path.

Acceptance criteria

• .vscode/extensions.json created
• .vscode/tasks.json created; test paths reflect tests/Unit/DSCResources/
• .vscode/settings.json created with no SQL Server–specific content
• .vscode/analyzersettings.psd1 created

References

• SqlServerDsc .vscode/ folder: https://github.com/dsccommunity/SqlServerDsc/tree/main/.vscode