Introduces a SDK function for simulating comprehensive Market Buy and Sell operations

In this pull request, I've added a simulate_market_transaction function that allows for simulating market buys/sells off-chain (without using simulateTransaction)

Key Changes:

Added based orderbook tallying for Ladder - this was done in a trait MarketSimulator that was attached to the Ladder struct (without having to change phoenix-v1)
Added simulate_market_transaction on the SDK which is the main entrypoint and wrapper around the new MarketSimulator code. This function accounts for lots/atoms conversion and adds fees appropriately.
Added unit tests for Ladder

🔐 Security-wise: all functions are non &mut, and there are no code deletions - only additions.

Testing Considerations:

The simulate_market_transaction function in SDK currently lacks tests since it's tightly coupled with networking. We can solve this in a follow up PR by allowing the function to process raw data without network dependencies. Once we do this, we'll be in a position to implement dedicated tests for it.

How to review

Suggested way to review

Start from Ladder code changes
Ensure unit tests are correct
Review the SDK changes
Specifically, make sure the fees are adjusted for appropriately

E2E tests using Phoenix CLI:

I did some E2E tests by creating a dummy function on phoenix-cli which calls simulate_market_transaction on an assortment of prices and directions. IN specifies what we are selling and OUT is the outcome of the swap

SOL/USD book
--------------------------------------------

[IN] Token: So11111111111111111111111111111111111111112
[IN] Amount size: 200 SOL
[IN] Amount atoms: 200000000000
[OUT] Base 200 (200000000000 atoms)
[OUT] Quote 4000.840321 (4000840321 atoms)
[OUT] Price: 20.004201605000002
--------------------------------------------
[IN] Token: So11111111111111111111111111111111111111112
[IN] Amount size: 500  SOL
[IN] Amount atoms: 500000000000
[OUT] Base 500 (500000000000 atoms)
[OUT] Quote 10001.170765 (10001170765 atoms)
[OUT] Price: 20.002341530000002
--------------------------------------------
[IN] Token: So11111111111111111111111111111111111111112
[IN] Amount size: 10000  SOL
[IN] Amount atoms: 10000000000000
[OUT] Base 6342.761 (6342761000000 atoms)  👈 Book exhausted
[OUT] Quote 68833.945844 (68833945844 atoms)
[OUT] Price: 10.852363165504737

--------------------------------------------
[IN] Token: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
[IN] Amount size: 200 USDC
[IN] Amount atoms: 200000000
[OUT] Base 9.988 (9988000000 atoms)
[OUT] Quote 199.95976 (199959760 atoms)
[OUT] Price: 20.02
--------------------------------------------
[IN] Token: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
[IN] Amount size: 500 USDC
[IN] Amount atoms: 500000000
[OUT] Base 24.967 (24967000000 atoms)
[OUT] Quote 499.880829 (499880829 atoms)
[OUT] Price: 20.02166175351464
--------------------------------------------
[IN] Token: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
[IN] Amount size: 10000 USDC
[IN] Amount atoms: 10000000000
[OUT] Base 499.258 (499258000000 atoms)
[OUT] Quote 9997.999507 (9997999507 atoms)
[OUT] Price: 20.025717178292588

Appreciate your feedback! and let me know what you think

Ellipsis-Labs / phoenix-sdk