Add more metrics for dex module

[yzang2019]

Describe your changes and provide context

Added following metrics:
Latency:

• get_all_contract_info
• end_blocker_atomic
• total_end_blocker_atomic
• handle_deposits
• order_matching_runnable
• handle_settlements
• handle_unfulfilled_market_orders

Gauge:

• num_of_registered_contracts
• num_of_valid_contracts
• num_of_zero_balance_contracts (rent =0)

Counter:

• total_failed_contracts
• total_unregistered_contracts

Testing performed to validate your change

Tested in rpc nodes

[github-actions]

Package	Line Rate	Complexity	Health
github.com/sei-protocol/sei-chain/aclmapping/bank	83%	0	✔
github.com/sei-protocol/sei-chain/aclmapping/dex	100%	0	✔
github.com/sei-protocol/sei-chain/aclmapping/oracle	100%	0	✔
github.com/sei-protocol/sei-chain/aclmapping/staking	96%	0	✔
github.com/sei-protocol/sei-chain/aclmapping/tokenfactory	96%	0	✔
github.com/sei-protocol/sei-chain/aclmapping/utils	0%	0	❌
github.com/sei-protocol/sei-chain/aclmapping/wasm	83%	0	✔
github.com/sei-protocol/sei-chain/app	61%	0	➖
github.com/sei-protocol/sei-chain/app/antedecorators	75%	0	➖
github.com/sei-protocol/sei-chain/oracle/price-feeder/config	85%	0	✔
github.com/sei-protocol/sei-chain/oracle/price-feeder/oracle	67%	0	➖
github.com/sei-protocol/sei-chain/oracle/price-feeder/oracle/provider	48%	0	❌
github.com/sei-protocol/sei-chain/oracle/price-feeder/router/v1	45%	0	❌
github.com/sei-protocol/sei-chain/store/whitelist/cachemulti	100%	0	✔
github.com/sei-protocol/sei-chain/store/whitelist/kv	100%	0	✔
github.com/sei-protocol/sei-chain/store/whitelist/multi	100%	0	✔
github.com/sei-protocol/sei-chain/utils	59%	0	➖
github.com/sei-protocol/sei-chain/utils/datastructures	90%	0	✔
github.com/sei-protocol/sei-chain/utils/logging	100%	0	✔
github.com/sei-protocol/sei-chain/x/dex	61%	0	➖
github.com/sei-protocol/sei-chain/x/dex/cache	87%	0	✔
github.com/sei-protocol/sei-chain/x/dex/client/cli/query	22%	0	❌
github.com/sei-protocol/sei-chain/x/dex/contract	52%	0	➖
github.com/sei-protocol/sei-chain/x/dex/exchange	94%	0	✔
github.com/sei-protocol/sei-chain/x/dex/keeper	61%	0	➖
github.com/sei-protocol/sei-chain/x/dex/keeper/abci	24%	0	❌
github.com/sei-protocol/sei-chain/x/dex/keeper/msgserver	79%	0	✔
github.com/sei-protocol/sei-chain/x/dex/keeper/query	82%	0	✔
github.com/sei-protocol/sei-chain/x/dex/migrations	88%	0	✔
github.com/sei-protocol/sei-chain/x/dex/types	1%	0	❌
github.com/sei-protocol/sei-chain/x/dex/types/utils	100%	0	✔
github.com/sei-protocol/sei-chain/x/dex/types/wasm	50%	0	➖
github.com/sei-protocol/sei-chain/x/epoch	11%	0	❌
github.com/sei-protocol/sei-chain/x/epoch/keeper	66%	0	➖
github.com/sei-protocol/sei-chain/x/epoch/types	2%	0	❌
github.com/sei-protocol/sei-chain/x/mint	61%	0	➖
github.com/sei-protocol/sei-chain/x/mint/keeper	77%	0	✔
github.com/sei-protocol/sei-chain/x/mint/simulation	95%	0	✔
github.com/sei-protocol/sei-chain/x/mint/types	4%	0	❌
github.com/sei-protocol/sei-chain/x/oracle	67%	0	➖
github.com/sei-protocol/sei-chain/x/oracle/keeper	82%	0	✔
github.com/sei-protocol/sei-chain/x/oracle/simulation	18%	0	❌
github.com/sei-protocol/sei-chain/x/oracle/types	3%	0	❌
github.com/sei-protocol/sei-chain/x/tokenfactory/keeper	85%	0	✔
github.com/sei-protocol/sei-chain/x/tokenfactory/types	2%	0	❌
Summary	14% (5037 / 34976)	0	❌