Add ALB and Target Cluster Proxy

[AndreKurait]

Description

This change adds cdk functionality to define and deploy an ALB in front of the migration infrastructure that allows a customer to orchestrate a migration by modifying an alb listener.

1. Adds a script create-acm-cert which generates and imports a long-lived alb compatible cert.
2. Adds a custom resource which deploys a lambda and generates and imports an ACM cert
3. Adds the ability to deploy a "target cluster proxy service" which is a non-capturing proxy that forwards requests to the deployed target cluster.
4. Adds the ALB with a specified ACM cert arn, and adds a listener on port 29200 for the target proxy and 443 for the source proxy.
5. Modifies the capture-proxy stack to deploy with https enabled by default
6. Updates the minimum aws-cdk version to 2.117.0 in order to support FIPS alb security policies

• Category: New Feature
• Why these changes are required? Support zero-downtime migration
• What is the old behavior before changes and new behavior after changes? Only change to existing deployments is the capture proxy in https

Issues Resolved

MIGRATIONS-1770

Is this a backport? If so, please add backport PR # and/or commits #

Testing

Manual testing in both gov cloud and commercial regions

Check List

• New functionality includes testing
  • [x ] All tests pass, including unit test, integration test and doctest
• [x ] New functionality has been documented
• [x ] Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.40%. Comparing base (16c735b) to head (609393d).
Report is 1 commits behind head on main.

❗ Current head 609393d differs from pull request most recent head c86425b

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Additional details and impacted files

@@             Coverage Diff              @@
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+ Coverage     63.29%   63.40%   +0.10%     
- Complexity     1579     1582       +3     
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  Files           220      220              
  Lines          9156     9156              
  Branches        793      793              
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+ Hits           5795     5805      +10     
+ Misses         2950     2941       -9     
+ Partials        411      410       -1     

Flag	Coverage Δ
unittests	63.40% <ø> (+0.10%)	⬆️

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