Feature/windows ec2 connect

[nathanlisabio]

Problem

connecting to ec2 via ssm on windows doesn't work due to missing ec2_connect.ps1 file
#6248

Solution

1. add ec2_connect.ps1
2. modify related scripts' windows components accordingly

---

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• Your code changes must meet the guidelines in CONTRIBUTING.md.
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[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.