Final audits and optimizations

[itsHaseebSaeed]

1. added oracles for the vol and fee metrics
2. fixed some errors
3. made final audits and optimizations

[codecov]

Codecov Report

Attention: Patch coverage is 94.37610% with 128 lines in your changes are missing coverage. Please review.

Project coverage is 81.97%. Comparing base (2328cff) to head (8eddf07).
Report is 3 commits behind head on liquidity-orderbook-develop.

Files	Patch %	Lines
contracts/liquidity_book/lb_pair/src/query.rs	89.66%	68 Missing ⚠️
contracts/liquidity_book/lb_pair/src/execute.rs	96.37%	36 Missing ⚠️
contracts/liquidity_book/lb_pair/src/contract.rs	96.07%	4 Missing ⚠️
contracts/liquidity_book/lb_pair/src/helper.rs	96.19%	4 Missing ⚠️
packages/multi_test/src/interfaces/lb_pair.rs	95.08%	3 Missing ⚠️
.../src/contract_interfaces/liquidity_book/lb_pair.rs	25.00%	3 Missing ⚠️
...aces/liquidity_book/lb_libraries/math/safe_math.rs	96.07%	2 Missing ⚠️
...faces/liquidity_book/lb_libraries/oracle_helper.rs	95.00%	2 Missing ⚠️
contracts/liquidity_book/lb_pair/src/state.rs	0.00%	1 Missing ⚠️
...ntracts/liquidity_book/lb_staking/schema/schema.rs	0.00%	1 Missing ⚠️
... and 4 more

Additional details and impacted files

@@                       Coverage Diff                       @@
##           liquidity-orderbook-develop     #395      +/-   ##
===============================================================
- Coverage                        82.05%   81.97%   -0.08%     
===============================================================
  Files                              200      204       +4     
  Lines                            30067    29674     -393     
===============================================================
- Hits                             24671    24326     -345     
+ Misses                            5396     5348      -48     

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