withdraw and call spl raydium swap poc

[skosito]

this will remain draft PR, it is just to demonstration. so code is a bit messy, eventually can be moved to localnet, there will be separate PRs for withdraw and call code

it contains some code for raydium instructions to set up tests, most can be ignored - to review relevant code:

• gateway tests swap test
• connected spl contract
• execute_spl gateway function

Poc demonstrates the following:

• arbirtrary program with on_call function can be called with arbirtrary accounts
• this program can sign tx using its own pda and manipulate withdrawn spl tokens
• use case that is more complicated and resembles real use case

Poc works in a following way:

Test:

• raydium accounts and programs needed for swap are cloned from mainnet
• gateway swap test prepares raydium related things for swap (sets up input and output tokens, ATAs, accounts etc)
• this test creates withdraw and call spl for gateway, but preparing all accounts needed for swap and putting them in remaining_accounts, and passes amount as argument for function

Gateway:

• gateway execute_spl_token formats and passes data, args and accounts to connected_spl test program which then performs the swap
• before on_call is called, this function withdraws spl tokens to connected_spl PDA

Connected program:

• on_call function in connected_spl program calls swap, using it's own PDA as a signer, and it swaps half amount to provided account

Security considerations atm:

• since users can put whatever accounts in remaining accounts, maybe zetaclient can remove signers, leaving it to connected programs to further sign using pda only? to be considered

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 131 lines in your changes missing coverage. Please review.

Please upload report for BASE (withdraw-and-call-spl@ae426df). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
programs/connectedSPL/src/lib.rs	0.00%	45 Missing ⚠️
.../connectedSPL/src/instructions/proxy_initialize.rs	0.00%	32 Missing ⚠️
...ams/connectedSPL/src/instructions/proxy_deposit.rs	0.00%	30 Missing ⚠️
...ectedSPL/src/instructions/proxy_swap_base_input.rs	0.00%	24 Missing ⚠️

Additional details and impacted files

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##             withdraw-and-call-spl     #76   +/-   ##
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  Coverage                         ?   0.33%           
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  Files                            ?       6           
  Lines                            ?     890           
  Branches                         ?       0           
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  Hits                             ?       3           
  Misses                           ?     887           
  Partials                         ?       0           

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[lumtis]

Suggested change

	// half amount is swaped using pda as signer to provided output account
	// half amount is swapped using pda as signer to provided output account