feat: add balancer v2 executor

foundry/lib/balancer-labs/v2-interfaces/CHANGELOG.md

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+# Changelog
+
+## 0.4.0 (20223-03-15)
+
+- Added `IERC4626`.
+- Added `IChildChainGauge`.
+- Added `ILMGetters`.
+
+### Breaking changes
+
+- Removed `IBaseGaugeFactory`.
+- Refactor: renamed `IBalancerMinter` to `IMainnetBalancerMinter`.
+  - `IMainnetBalancerMinter` now implements reduced version of previous `IBalancerMinter` and `ILMGetters`.
+
+## 0.3.0 (20223-02-08)
+
+### New Features
+
+- Added `checkpointGaugesOfTypeAboveRelativeWeight` to `IL2GaugeCheckpointer`.
+- Added `IComposableStablePoolRates`.
+- Added `IProtocolFeeCache`.
+- Added `setTargets` and `setSwapFeePercentage` to `ILinearPool`.
+
+### Breaking changes
+
+- `IL2GaugeCheckpointer`: `getGaugeAt` renamed to `getGaugeAtIndex`.
+
+## 0.2.1 (2022-12-12)
+
+### Misc
+
+- Added examples to readme.
+
+## 0.2.0 (2022-12-01)
+
+### New Interfaces
+
+- Added `IProtocolFeeSplitter`.
+- Added `IL2GaugeCheckpointer`.
+- Added `IAuthorizerAdaptorEntrypoint`.
+- Added `IRateProviderPool`.
+- Added `IVersion`.
+- Added `IFactoryCreatedPoolVersion`.
+- Added `IRecoveryModeHelper`.
+
+### New Features
+
+- Extended the valid compiler version range to any of the 0.7.x and 0.8.x line.
+
+### Breaking Changes
+
+- Removed `IAssetManager`, which was unused.
+- `IGaugeAdder`: authorizer adaptor getter replaced with authorizer adaptor entrypoint getter.
+
+## 0.1.0 (2022-10-25)
+
+- Initial release.