Init MemoryMappedFile module (#1)

## Description

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## Type of change

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- [ ] 📖 [Docs]
- [ ] 🪲 [Fix]
- [ ] 🩹 [Patch]
- [ ] ⚠️ [Security fix]
- [ ] 🚀 [Feature]
- [ ] 🌟 [Breaking change]

## Checklist

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- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas

Author: MariusStorhaug

examples/General.ps1

@@ -1,19 +1,21 @@
-<#
-  .SYNOPSIS
-    This is a general example of how to use the module.
-#>
+#
+# Monitor process
+#
+Show-MemoryMappedFile -Name 'shared'
 
-# Import the module
-Import-Module -Name 'PSModule'
 
-# Define the path to the font file
-$FontFilePath = 'C:\Fonts\CodeNewRoman\CodeNewRomanNerdFontPropo-Regular.tff'
-
-# Install the font
-Install-Font -Path $FontFilePath -Verbose
-
-# List installed fonts
-Get-Font -Name 'CodeNewRomanNerdFontPropo-Regular'
-
-# Uninstall the font
-Get-Font -Name 'CodeNewRomanNerdFontPropo-Regular' | Uninstall-Font -Verbose
+#
+# Client that writes to the memory-mapped file
+#
+$params = @{
+    Name    = 'shared'
+    Path    = "$HOME\shared.json"
+    Content = [PSCustomObject]@{
+        Name    = 'This is my name'
+        Size    = 'XL'
+        Content = 'This is my content'
+        Date    = (Get-Date).ToString('yyyy-MM-dd HH:mm:ss')
+        Tags    = @('tag1', 'tag2', 'tag3')
+    } | ConvertTo-Json -Depth 10
+}
+Set-MemoryMappedFileContent @params -PassThru

src/README.md

@@ -0,0 +1,45 @@
+function Close-MemoryMappedFile {
+    <#
+        .SYNOPSIS
+        Closes and disposes an existing memory-mapped file by name.
+
+        .DESCRIPTION
+        This function attempts to open an existing memory-mapped file with the specified name.
+        If the file exists, it disposes of the file and frees the associated memory resources.
+        If the file does not exist or has already been closed, a warning is displayed instead.
+        This operation is useful for cleaning up unmanaged resources created with memory-mapped files.
+
+        .EXAMPLE
+        Close-MemoryMappedFile -Name 'MySharedMemory'
+
+        Output:
+        ```powershell
+        VERBOSE: Memory-mapped file 'MySharedMemory' closed successfully.
+        ```
+
+        Closes the memory-mapped file named 'MySharedMemory' and disposes of its resources.
+
+        .LINK
+        https://psmodule.io/MemoryMappedFile/Functions/Close-MemoryMappedFile
+    #>
+
+    [CmdletBinding()]
+    param(
+        # The name of the memory-mapped file to close and dispose.
+        [Parameter(Mandatory)]
+        [string] $Name
+    )
+
+    try {
+        $item = [System.IO.MemoryMappedFiles.MemoryMappedFile]::OpenExisting($Name)
+    } catch {
+        return $null
+    }
+
+    if ($item) {
+        $item.Dispose()
+        Write-Verbose "Memory-mapped file '$Name' closed successfully."
+    }
+}
+
+#SkipTest:FunctionTest:Will add a test for this function in a future PR