refactor(upgrade): use Bazel packages to avoid symlinks in the source (#29466)

Previously we had to share code between upgrade/dynamic and upgrade/static
by symlinking the `src` folder, which allowed both packages to access
the upgrade/common files.

These symlinks are always problematic on Windows, where we had to run
a script to re-link them, and restore them.

This change uses Bazel packages to share the `upgrade/common` code,
which avoids the need for symlinking the `src` folder.

Also, the Windows specific scripts that fixup the symlinks have also
been removed as there is no more need for them.

PR Close #29466

.codefresh/codefresh.yml

@@ -17,8 +17,6 @@ steps:
     commands:
     # Install dependencies
     - yarn install --frozen-lockfile --non-interactive --network-timeout 100000 --no-progress
-    # Create symlinks needed for Windows.
-    - scripts\windows\create-symlinks.cmd
     # Add Bazel CI config
     - copy .codefresh\bazel.rc %ProgramData%\bazel.bazelrc
     # Run tests