Base Hydrex AMO

[sparrowDom]

Adds an AMO strategy for the Hydrex superOETHb/WETH stable pool on Base (0xEB9ebc2dEF5aa715C0CED10749cbdC15Ac27f632), wired into the OETHBase Vault. Mirrors the
mainnet Supernova AMO (#2800 / ff627d2c).

The Hydrex pool is a stable Solidly-style pair and Hydrex's GaugeV2 is almost completely compatible with the existing IAlgebraGauge for every function StableSwapAMMStrategy calls. There is just the change of how the pool LP token gauge has configured is fetched. This PR accomodates both Gauge Types.

Code Change Checklist

To be completed before internal review begins:

• The contract code is complete
• Executable deployment file
• Fork tests that test after the deployment file runs
• Unit tests *if needed
• The owner has done a full checklist review of the code + tests

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.83%. Comparing base (78e4669) to head (a3a59d5).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...racts/strategies/algebra/StableSwapAMMStrategy.sol	0.00%	1 Missing ⚠️
...racts/strategies/hydrex/OETHbHydrexAMOStrategy.sol	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2886      +/-   ##
==========================================
+ Coverage   41.59%   41.83%   +0.23%     
==========================================
  Files         113      114       +1     
  Lines        4916     4917       +1     
  Branches     1362     1362              
==========================================
+ Hits         2045     2057      +12     
+ Misses       2868     2857      -11     
  Partials        3        3              

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