Windows build maintenance and updates

[pierotofy]

ODM has been released natively for Windows for some time, mostly to support the deployment of WebODM on Windows.

There are two items that currently need attention in the near/immediate term:

• The code signing certificate used to sign the binaries/setup will expire shortly. This needs to be renewed, but I will not be personally renewing it. There's a CODE_SIGNING_CERT secret in this repo that represents in base64 encoding the certificate and it needs to be updated (see the relevant GitHub action for details on format/usage).
• Windows test/release builds are currently broken because the Windows 2019 image for GitHub actions has been deprecated by GitHub and they need to be updated / tested to a newer Windows version. I do not have the time at present to do this.

In the longer term, someone should step up to either help maintain the Windows build for the long term, or alternatively fund its maintenance. It is not a difficult task, but it is a time consuming one because every update requires extensive and careful testing.

[pierotofy]

Possibly related #1843

[pierotofy]

[smathermather]

Yup. We're looking into what the build updates will take on our end and @Saijin-Naib has the cert on his list as top priority.

[NathanMOlson]

#1904 gets the windows build working again.