Add COPR build infrastructure for RHEL9/10

- RPM spec file with vendored dependencies support
- Automated build script (copr-build.sh)
- Comprehensive COPR.md documentation
- Updated .gitignore for vendor directory

Files added:
- clevis-pin-trustee.spec: RPM spec for EPEL 9/10
- copr-build.sh: Automated vendoring and COPR upload
- COPR.md: Complete build and troubleshooting guide

The vendored tarball approach ensures offline builds in COPR
and avoids network dependencies during the build process.

Signed-off-by: Sergio Arroutbi <[email protected]>

Author: sarroutbi

.github/workflows/release.yml

@@ -89,7 +89,7 @@ jobs:
 
   # Build and packages all the platform-specific things
   build-local-artifacts:
-    name: build-local-artifacts (${{ join(matrix.targets, ', ') }})
+    name: build-local-artifacts ${{ matrix.targets }}
     # Let the initial task tell us to not run (currently very blunt)
     needs:
       - plan

.gitignore

@@ -14,3 +14,11 @@
 # Temporary files
 *.tmp
 *.temp
+
+# Vendored dependencies for RPM builds
+/vendor/
+/.cargo/config.toml
+*-vendor.tar.gz
+
+# Release artifacts
+/release-artifacts/