feat: simapp/v2 (#20412)

Co-authored-by: marbar3778 <marbar3778@yahoo.com>
Co-authored-by: Marko <marko@baricevic.me>
Co-authored-by: Likhita Polavarapu <78951027+likhita-809@users.noreply.github.com>
Co-authored-by: unknown unknown <unknown@unknown>

scripts/simapp-v2-init.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -x
+
+ROOT=$PWD
+SIMAPP_DIR="$ROOT/simapp/v2"
+
+SIMD="$ROOT/build/simdv2"
+CONFIG="${CONFIG:-$HOME/.simappv2/config}"
+
+cd "$SIMAPP_DIR"
+go build -o "$ROOT/build/simdv2" simdv2/main.go
+
+$SIMD init simapp-v2-node --chain-id simapp-v2-chain
+
+cd "$CONFIG"
+
+# to enable the api server
+$SIMD config set app api.enable true
+
+# to change the voting_period
+jq '.app_state.gov.voting_params.voting_period = "600s"' genesis.json > temp.json && mv temp.json genesis.json
+
+# to change the inflation
+jq '.app_state.mint.minter.inflation = "0.300000000000000000"' genesis.json > temp.json && mv temp.json genesis.json
+
+# change the initial height to 2 to work around store/v2 and iavl limitations with a genesis block
+jq '.initial_height = 2' genesis.json > temp.json && mv temp.json genesis.json
+
+$SIMD keys add test_validator --indiscreet
+VALIDATOR_ADDRESS=$($SIMD keys show test_validator -a --keyring-backend test)
+
+$SIMD genesis add-genesis-account "$VALIDATOR_ADDRESS" 1000000000stake
+$SIMD genesis gentx test_validator 1000000000stake --keyring-backend test
+$SIMD genesis collect-gentxs
+
+$SIMD start &
+SIMD_PID=$!
+
+cnt=0
+while ! $SIMD query block --type=height 5; do
+  cnt=$((cnt + 1))
+  if [ $cnt -gt 30 ]; then
+    kill -9 "$SIMD_PID"
+    exit 1
+  fi
+  sleep 1
+done
+
+kill -9 "$SIMD_PID"