Deployment preparation: Unbalanced Add via Swap Router

[EndymionJkb]

Deployment preparation: Unbalanced Add via Swap Router

Build-info: balancer/balancer-v3-monorepo@aed46f9

V3 of the unbalanced add via swap router, with both ExactIn and ExactOut paths supported.

Deployment preparation tasks checklist:

• Deployments README is updated with the new task name and link
• Task README has a description and links to the artifacts
• build-info is updated with artifacts compiled at the specified commit
• Artifacts are generated from build-info
• New task has a working fork test
• Maxis have been informed of any required governance actions

Code checklist:

• The diff is legible and has no extraneous changes
• Complex code has been commented in tests and scripts
• Fork test block number and test cases are appropriate for this deployment
• The base branch is either master, or there's a description of how to merge

Issue Resolution

[jubeira]

LGTM!
Build info matches balancer/balancer-v3-monorepo@aed46f9.