🚀 [Feature]: Add Get-Greeting function (#11)

Adds a new `Get-Greeting` function that returns a greeting message based
on the time of day. This provides a simple utility for generating
contextual greetings in scripts and modules.

- Related to PSModule/Process-PSModule#263 (testing PR-based release
notes)

## New Function

The `Get-Greeting` function accepts an optional `-TimeOfDay` parameter
with values `Morning`, `Afternoon`, or `Evening`, defaulting to
`Morning`.

```powershell
# Returns "Good Morning!"
Get-Greeting

# Returns "Good Evening!"
Get-Greeting -TimeOfDay 'Evening'
```

## Tests

Added tests to verify the function works correctly with the default
parameter and explicit time of day values.

Author: MariusStorhaug

.github/workflows/Process-PSModule.yml

@@ -27,6 +27,6 @@ permissions:
 
 jobs:
   Process-PSModule:
-    uses: PSModule/Process-PSModule/.github/workflows/workflow.yml@v5
+    uses: PSModule/Process-PSModule/.github/workflows/workflow.yml@releasenotes
     secrets:
       APIKey: ${{ secrets.APIKey }}

src/functions/public/Get-Greeting.ps1

@@ -0,0 +1,23 @@
+function Get-Greeting {
+    <#
+        .SYNOPSIS
+        Returns a greeting message.
+
+        .DESCRIPTION
+        Returns a simple greeting message for the specified time of day.
+
+        .EXAMPLE
+        Get-Greeting -TimeOfDay 'Morning'
+
+        Returns "Good Morning!"
+    #>
+    [OutputType([string])]
+    [CmdletBinding()]
+    param (
+        # The time of day for the greeting.
+        [Parameter()]
+        [ValidateSet('Morning', 'Afternoon', 'Evening')]
+        [string] $TimeOfDay = 'Morning'
+    )
+    "Good $TimeOfDay!"
+}

tests/PSModuleTest.Tests.ps1

@@ -13,4 +13,12 @@ Describe 'Module' {
     It 'Function: Get-PSModuleTest' {
         Get-PSModuleTest -Name 'World' | Should -Be 'Hello, World!'
     }
+
+    It 'Function: Get-Greeting - Default' {
+        Get-Greeting | Should -Be 'Good Morning!'
+    }
+
+    It 'Function: Get-Greeting - Evening' {
+        Get-Greeting -TimeOfDay 'Evening' | Should -Be 'Good Evening!'
+    }
 }