Author and publish a PowerShell script module with a manifest, exported functions, and proper directory structure

Steps

1. Create a module directory whose name matches the module: mkdir MyModule; create MyModule/MyModule.psm1 containing function definitions.
2. Generate a manifest: New-ModuleManifest -Path ./MyModule/MyModule.psd1 -RootModule MyModule.psm1 -FunctionsToExport @('Get-MyData','Set-MyConfig') -ModuleVersion '1.0.0'
3. Place the module directory under one of the paths in $env:PSModulePath so it can be found by name, or import by path: Import-Module ./MyModule/MyModule.psd1
4. Verify exported members: Get-Module MyModule | Select-Object -ExpandProperty ExportedFunctions
5. To publish to the PowerShell Gallery (requires an API key), use Publish-Module -Name MyModule -NuGetApiKey <PLACEHOLDER>.