maintenance: rename helper module to Get-PesterCodeCoverage.Helpers

Aligns with the action helper-module naming standard: name the module after the action, not the generic Helpers (which collides with the shared framework Helpers module in the runner's single module session). Renames src/Helpers.psm1 to src/Get-PesterCodeCoverage.Helpers.psm1 and updates the entry-script import. No runtime logic changed. Part of PSModule/Process-PSModule#364.

Author: MariusStorhaug

src/Helpers.psm1 src/Get-PesterCodeCoverage.Helpers.psm1src/Helpers.psm1 renamed to src/Get-PesterCodeCoverage.Helpers.psm1

@@ -24,7 +24,7 @@ LogGroup 'Init - Setup prerequisites' {
         }
         Import-Module -Name $name
     }
-    Import-Module "$PSScriptRoot/Helpers.psm1"
+    Import-Module "$PSScriptRoot/Get-PesterCodeCoverage.Helpers.psm1"
 }
 
 $owner = $env:GITHUB_REPOSITORY_OWNER