Compile winfw on CI

[pronebird]

• Pin rustc to 1.84.1 across all CI flows
• Add script to build winfw and restore the relevant CI flows
• Move third-party/windows to nym-vpn-windows

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This change is 

[neacsu]

Reviewed 57 of 136 files at r1, all commit messages.
Reviewable status: 57 of 136 files reviewed, 1 unresolved discussion (waiting on @octol)

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build-windows-modules.ps1 line 15 at r1 (raw file):

switch ($CopyToBuildDir) {
    $true {

Not very familiar with PowerShell. There's no if else statement there?

[pronebird]

Reviewable status: 56 of 136 files reviewed, 1 unresolved discussion (waiting on @neacsu and @octol)

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build-windows-modules.ps1 line 15 at r1 (raw file):

Previously, neacsu (Bogdan-Ștefan Neacşu) wrote…

Not very familiar with PowerShell. There's no if else statement there?

This is my first powershell script :) Let me have a look.

[pronebird]

Reviewable status: 55 of 136 files reviewed, 1 unresolved discussion

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build-windows-modules.ps1 line 15 at r1 (raw file):

Previously, pronebird (Andrej Mihajlov) wrote…

This is my first powershell script :) Let me have a look.

Fixed