feat(tee): AMD SEV-SNP supported VM image build scripts (#388)

Scripts for building the VM components for running Katana in QEMU VM in direct kernel boot mode with TEE feature enabled.

## Reproducibility

The scripts takes into account all variables that may affect the build process for each component of the VM image. A `build-config` file that pins the exact version (as well as the checksum) of each required dependencies.

The katana binary that is used in the VM image is a statically-linked version using the musl C standard library. We're not vendoring the cargo dependencies for now so there's a possibility that it may not be reproducible. Vendoring is important for hermetic builds and is considered the gold standard for reproducibility. So, we should tackle this in the future.

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Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: Ammar Arif <kariy@users.noreply.github.com>

Author: kariy

.dockerignore

@@ -7,6 +7,7 @@ AGENT.md
 # Build artifacts and caches
 target/
 build/
+!crates/contracts/build/
 monitoring/
 
 # CI/CD files (except the Dockerfile being built)

.gitignore

@@ -40,3 +40,11 @@ crates/contracts/build/
 !crates/contracts/build/legacy/
 
 **/.claude/settings.local.json
+
+vendor
+katana-tee
+
+# AMDSEV build artifacts
+misc/AMDSEV/ovmf/
+misc/AMDSEV/output/
+misc/AMDSEV/source-commit.ovmf