tip: Use Get-ChildItem to see environment variables

src/PowerShellTips/2024-05-20-use-get-childitem-to-easily-see-all-environment-variables.ps1

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+$tip = [tiPS.PowerShellTip]::new()
+$tip.CreatedDate = [DateTime]::Parse('2024-05-20')
+$tip.Title = 'Use Get-ChildItem to easily see all environment variables'
+$tip.TipText = @'
+Need to quickly see all of the environment variables on your system? Use the `Get-ChildItem` cmdlet with the `Env:` drive to easily list them all with their values.
+'@
+$tip.Example = @'
+# List all environment variables and their values.
+Get-ChildItem Env:
+
+# You can do the same thing using one of the aliases for Get-ChildItem.
+gci Env:
+dir Env:
+
+# List a specific environment variable. e.g. the PATH environment variable.
+Get-ChildItem Env:Path
+'@
+$tip.Urls = @(
+	'https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-childitem'
+)
+$tip.Category = [tiPS.TipCategory]::NativeCmdlet # Community, Editor, Module, NativeCmdlet, Performance, Security, Syntax, Terminal, or Other.
+$tip.Author = 'Daniel Schroeder (deadlydog)' # Optional. Get credit for your tip. e.g. 'Daniel Schroeder (deadlydog)'.
+#$tip.ExpiryDate = [DateTime]::Parse('2024-10-30') # Optional. If the tip is not relevant after a certain date, set the expiration date. e.g. Announcing a conference or event.
+
+# Category meanings:
+# Community: Social events and community resources. e.g. PowerShell Summit, podcasts, etc.
+# Editor: Editor tips and extensions. e.g. VSCode, ISE, etc.
+# Module: Modules and module tips. e.g. PSScriptAnalyzer, Pester, etc.
+# NativeCmdlet: Native cmdlet tips. e.g. Get-Process, Get-ChildItem, Get-Content, etc.
+# Performance: Tips to improve runtime performance. e.g. foreach vs ForEach-Object, ForEach-Object -Parallel, etc.
+# Security: Security tips. e.g. ExecutionPolicy, Constrained Language Mode, passwords, etc.
+# Syntax: Syntax tips. e.g. splatting, pipeline, etc.
+# Terminal: Terminal shortcuts and tips. e.g. PSReadLine, Windows Terminal, ConEmu, etc.
+# Other: Tips that don't fit into any of the other categories.