feat: flow expansion

[kerber0x]

Description and Motivation

This PR adds the functionality to expand an active incentive flow.

Related Issues

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Checklist:

• I have read Migaloo's contribution guidelines.
• My pull request has a sound title and description (not something vague like Update index.md)
• All existing and new tests are passing.
• I updated/added relevant documentation.
• The code is formatted properly cargo fmt --all --.
• Clippy doesn't report any issues cargo clippy -- -D warnings.
• I have regenerated the schemas if needed cargo schema.

[codecov]

Codecov Report

Patch coverage: 96.83% and project coverage change: +0.27% 🎉

Comparison is base (8be0687) 94.22% compared to head (5972d45) 94.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #191      +/-   ##
==========================================
+ Coverage   94.22%   94.50%   +0.27%     
==========================================
  Files         215      217       +2     
  Lines       23311    24822    +1511     
==========================================
+ Hits        21965    23457    +1492     
- Misses       1346     1365      +19     

Files Changed	Coverage Δ
.../liquidity_hub/pool-network/incentive/src/error.rs	0.00% <ø> (ø)
...ub/pool-network/incentive/src/tests/integration.rs	98.18% <ø> (+0.38%)	⬆️
...dity_hub/pool-network/incentive/src/tests/suite.rs	85.95% <83.33%> (+0.07%)	⬆️
...iquidity_hub/pool-network/incentive/src/helpers.rs	89.79% <88.00%> (-1.88%)	⬇️
.../pool-network/incentive/src/execute/expand_flow.rs	95.12% <95.12%> (ø)
.../liquidity_hub/pool-network/incentive/src/claim.rs	97.64% <100.00%> (+0.24%)	⬆️
...quidity_hub/pool-network/incentive/src/contract.rs	100.00% <100.00%> (ø)
...b/pool-network/incentive/src/execute/close_flow.rs	100.00% <100.00%> (ø)
...ub/pool-network/incentive/src/execute/open_flow.rs	98.80% <100.00%> (+0.07%)	⬆️
...hub/pool-network/incentive/src/queries/get_flow.rs	100.00% <100.00%> (+16.66%)	⬆️
... and 4 more

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[0xFable]

Might be good to keep a record somewhere of what changes between versions just for your own reference

[kerber0x]

Yes we should probably add a changelog file to the repo, good point.

[kerber0x]

Yes we should probably add a changelog file to the repo, good point.