chore: move upgrade files to root

this is so we can reuse the existing .env files

Author: MarcosNicolau

contracts/scripts/deploy_proof_aggregator.sh

@@ -35,4 +35,5 @@ forge script script/deploy/AlignedProofAggregationServiceDeployer.s.sol \
     --verify \
     --etherscan-api-key $ETHERSCAN_API_KEY \
     --slow \
-    --sig "run(string configPath, string outputPath)"
+    --sig "run(string configPath, string outputPath)" \
+    --via-ir

contracts/scripts/proof_aggregator_service/.env.example

@@ -1,5 +1,22 @@
 #!/bin/bash
 
+# ENV VARIABLES
+#
+# EXISTING_DEPLOYMENT_INFO_PATH: Path to the proof aggregator deployment output file
+#   - Holesky Stage: ./script/output/holesky/proof_aggregation_service_deployment_output.stage.json
+#   - Holesky Prod: ./script/output/holesky/roof_aggregation_service_deployment_output.json
+#
+# PROOF_AGGREGATOR_OUTPUT_PATH: Path to the proof aggregator output file
+#   - Holesky Stage: ./script/output/holesky/proof_aggregation_service_deployment_output.stage.json
+#   - Holesky Prod: ./script/output/holesky/proof_aggregation_service_deployment_output.json
+#
+# RPC_URL: The RPC URL to connect to the Ethereum network
+#
+# PRIVATE_KEY: The private key to use for the deployment
+#
+# ETHERSCAN_API_KEY: The Etherscan API key to use for verification
+#
+
 # cd to the directory of this script so that this can be run from anywhere
 parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )