Add documentation for skipping individual PSModule framework tests

[Copilot]

The Test-PSModule framework runs style and standards tests against source code (e.g., enforcing one function per file, requiring CmdletBinding attributes). Users needed guidance on skipping specific tests per-file when framework rules don't apply.

Changes

• New documentation section "Skipping Individual Framework Tests" added to README
  • Syntax: #SkipTest:<TestID>:<Reason> comment at file top
  • Complete reference table of 10 SourceCode test IDs with descriptions
  • Module test overview (import/manifest validation)
  • Code example demonstrating skip usage
  • Best practices and configuration cross-references

Available Test IDs

Test ID	What It Enforces
NumberOfProcessors	Use [System.Environment]::ProcessorCount not $env:NUMBER_OF_PROCESSORS
Verbose	Don't pass -Verbose to commands (overrides user preference)
OutNull	Use $null = ... not | Out-Null
FunctionCount	One function per file
FunctionName	Filename matches function name
CmdletBinding	All functions have [CmdletBinding()]
ParamBlock	All functions have param() block
FunctionTest	Public functions have tests

Example

#SkipTest:FunctionCount:Contains helper functions for main function

function Get-ComplexData {
    [CmdletBinding()]
    param([string]$Path)
    
    $data = Get-RawData -Path $Path
    return Format-ComplexData -Data $data
}

function Get-RawData { ... }
function Format-ComplexData { ... }

Based on analysis of Test-PSModule framework tests.

Original prompt

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This section details on the original issue you should resolve

<issue_title>🩹 [Patch]: Add doc for how to skip framework (PSModule) tests</issue_title>
<issue_description>### Describe the change

Based on the code in PSModule/Test-PSModule, we need to recreate guidance in the readme on Process-PSModule for how users can skip individual tests from the framework, i.e. number of functions to have in a file.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 🩹 [Patch]: Add doc for how to skip framework (PSModule) tests #251

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[Copilot]

Pull request overview

This PR adds comprehensive documentation for skipping individual PSModule framework tests on a per-file basis. Users can now add #SkipTest:<TestID>:<Reason> comments to skip specific tests when framework rules don't apply to particular files.

• New documentation section with syntax, complete test reference table, and examples
• Documents 10 SourceCode test IDs with descriptions and skip comment examples
• Includes best practices and links to broader configuration options