build.ps1: clean up the Get-Dependencies output

[compnerd]

This pull request refactors the output messages in the Get-Dependencies function in utils/build.ps1 to improve clarity and consistency. It introduces a new Write-Success helper function for standardized success messages and replaces many previous verbose Write-Output statements with this new format. Additionally, several unnecessary or redundant output lines have been commented out to reduce noise during dependency extraction and installation.

Output improvements:

• Added a Write-Success function that prints a standardized success message after each dependency is installed or extracted, improving clarity and consistency.
• Replaced many Write-Output statements with calls to Write-Success for dependencies such as syft, WiX, sccache, GNUWin32 make, Swift Toolchain, Python, pip, Python modules, Android NDK, and flex/bison. [1] [2] [3] [4] [5] [6] [7]

Noise reduction and code cleanup:

• Commented out several verbose Write-Output statements related to extraction and installation status, reducing console clutter during builds. [1] [2] [3] [4] [5] [6]
• Minor update to suppress output from $Enumerator.MoveNext() by piping to Out-Null in Invoke-BuildStep.

[compnerd]

@swift-ci please smoke test

[compnerd]

@swift-ci please smoke test

[compnerd]

@swift-ci please smoke test