chore(ci): improve the flow of local smoke test (#926)

## Summary
Updates justfile to provide more flexibility in images used. When no tag
is specified, you can simply modify values files to run a single local
image, whereas before needed all custom or none.

## Background
I want to make it really easy for people to test the components they are
editing locally e2e.

justfile

@@ -205,17 +205,24 @@ clean-persisted-data:
 deploy-local-metrics:
   kubectl apply -f kubernetes/metrics-server-local.yml
 
-defaultTag := 'latest'
+defaultTag := ""
 
 deploy-smoke-test tag=defaultTag:
   @echo "Deploying ingress controller..." && just deploy-ingress-controller > /dev/null
   @just wait-for-ingress-controller > /dev/null
   @echo "Deploying local celestia instance..." && just deploy celestia-local > /dev/null
   @helm dependency build charts/sequencer > /dev/null
   @helm dependency build charts/evm-rollup > /dev/null
-  @echo "Setting up single astria sequencer..." && helm install -n astria-validator-single single-sequencer-chart ./charts/sequencer -f dev/values/validators/single.yml --set images.sequencer.devTag={{tag}} --set sequencer-relayer.images.sequencer-relayer.devTag={{tag}} --create-namespace > /dev/null
+  @echo "Setting up single astria sequencer..." && helm install \
+    -n astria-validator-single single-sequencer-chart ./charts/sequencer \
+    -f dev/values/validators/single.yml \
+    {{ if tag != '' { replace('--set images.sequencer.devTag=# --set sequencer-relayer.images.sequencer-relayer.devTag=#', '#', tag) } else { '' } }} \
+    --create-namespace > /dev/null
   @just wait-for-sequencer > /dev/null
-  @echo "Starting EVM rollup..." && helm install -n astria-dev-cluster astria-chain-chart ./charts/evm-rollup -f dev/values/rollup/dev.yaml --set images.conductor.devTag={{tag}} --set images.composer.devTag={{tag}} --set config.blockscout.enabled=false --set config.faucet.enabled=false > /dev/null
+  @echo "Starting EVM rollup..." && helm install -n astria-dev-cluster astria-chain-chart ./charts/evm-rollup -f dev/values/rollup/dev.yaml \
+    {{ if tag != '' { replace('--set images.conductor.devTag=# --set images.composer.devTag=#', '#', tag) } else { '' } }} \
+    --set config.blockscout.enabled=false \
+    --set config.faucet.enabled=false > /dev/null
   @sleep 30
 
 run-smoke-test: