feat!: migrate to custom resources

[damacus]

Summary

• migrate the cookbook from legacy recipes and attributes to custom resources for WMF, WinRM, DSC, and LCM management
• align CI and Kitchen configuration with the current Sous-Chefs workflow shape, including the Windows exec-driver path used in GitHub Actions
• refresh README, testing guidance, limitations, and resource documentation, and replace the old recipe specs with focused unit and integration coverage

Testing

• berks install
• cookstyle
• resource and library specs passed: 25 examples, 0 failures
• kitchen test default-windows-2019 --destroy=always fails locally during vagrant winrm-config on the Parallels VM before converge starts; the VM reports as running but never exposes WinRM config

[github-actions]

Slowest examples

Top 10 slowest examples (1.05 seconds, 47.91% of total time)

Example	Description	Time in seconds
spec/unit/resources/powershell_dsc_spec.rb:17	powershell_dsc is expected to install powershell_wmf "4.0"	0.13906
spec/unit/resources/powershell_lcm_spec.rb:27	powershell_lcm with action :enable is expected to create directory "Creating temporary directory to store LCM MOF files"	0.11905
spec/unit/resources/powershell_wmf_spec.rb:66	powershell_wmf when installing PowerShell 5.1 on Windows Server 2008 R2 is expected to create remote_file "C:/Users/RUNNER~1/AppData/Local/Temp/d20260420-5264-k1kx7y\wmf51.zip"	0.104
spec/unit/resources/powershell_winrm_spec.rb:32	powershell_winrm when enabling an HTTPS listener is expected to run powershell_script "winrm-create-https-listener"	0.10281
spec/unit/resources/powershell_lcm_spec.rb:43	powershell_lcm with action :disable is expected to create powershell_dsc "default"	0.10154
spec/unit/resources/powershell_wmf_spec.rb:78	powershell_wmf when installing PowerShell 5.1 on Windows Server 2008 R2 is expected to equal true	0.10094
spec/unit/resources/powershell_lcm_spec.rb:26	powershell_lcm with action :enable is expected to create powershell_dsc "default"	0.10056
spec/unit/resources/powershell_lcm_spec.rb:32	powershell_lcm with action :enable is expected to run powershell_script "Configure and Enable LCM"	0.09739
spec/unit/resources/powershell_wmf_spec.rb:20	powershell_wmf when installing PowerShell 2.0 on Windows Server 2012 is expected to install windows_feature "MicrosoftWindowsPowerShellV2"	0.09716
spec/unit/resources/powershell_lcm_spec.rb:42	powershell_lcm with action :disable is expected to install powershell_wmf "5.1"	0.09554