Adds Base chainId & router address to sdk

[abtestingalpha]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00000% and project coverage change: +0.00383% 🎉

Comparison is base (67d6ef5) 58.87795% compared to head (472c4a1) 58.88178%.
Report is 10 commits behind head on master.

❗ Current head 472c4a1 differs from pull request most recent head a8b09ad. Consider uploading reports for the commit a8b09ad to get more accurate results

Additional details and impacted files

@@                 Coverage Diff                 @@
##              master       #1205         +/-   ##
===================================================
+ Coverage   58.87795%   58.88178%   +0.00383%     
===================================================
  Files            532         532                 
  Lines          32209       32212          +3     
  Branches         275         276          +1     
===================================================
+ Hits           18964       18967          +3     
  Misses         11545       11545                 
  Partials        1700        1700                 

Flag	Coverage Δ
packages	82.64925% <100.00000%> (+0.09765%)	⬆️

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Files Changed	Coverage Δ
packages/sdk-router/src/constants/index.ts	100.00000% <100.00000%> (ø)
packages/sdk-router/src/sdk.ts	85.20408% <100.00000%> (+0.15252%)	⬆️

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