Adds 2025.2 to verifyVersions to enable testing and support for
JetBrains 2025.2 EAP builds with 252.* version numbers.

This addresses customer requests for 2025.2 EAP compatibility.

Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>
Co-authored-by: matifali <10648092+matifali@users.noreply.github.com>

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Faur Ioan-Aurel <fioan89@gmail.com>

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* Set 'jetbrains_connection' as build reason on workspace start

* Fix tests

* impl: support for downloading and verifying cli signatures

* fix: class cast exception

* impl: embed the pgp public key as a plugin resource

This is the key that validates if the gpg signature was tampered

* chore: fix UTs related to CLI downloading

For one thing some method signature changed, some methods are now suspending functions
that will have to run in a coroutine in the tests. The second big issue is that now
the download function requests user's input via a dialog

* fix: download the correct CLI signature for Windows

The signature for windows CLI follows the format: coder-windows-amd64.exe.asc
Currently it is coded to coder-windows-amd64.asc which means the plugin
always fail to find any signature for windows cli

* chore: next version is 2.22.0

* impl: strict URL validation for the connection screen

This commit rejects any URL that is opaque, not hierarchical, not using http or https
protocol, or it misses the hostname.

* impl: strict URL validation for the URI handling

This commit rejects any URL that is opaque, not hierarchical, not using http or https
protocol, or it misses the hostname.

* fix: transform to url only after we checked the validation result

* chore: update UT expected result