Removing scripts in favor of builtin `azd deploy` support

[paulyuk]

Purpose

We had a script-based workaround in place for all Flex samples. This is no longer needed thanks to azd feature in 1.9.5 that adds support for the Flex deployment endpoint /api/publish.

This change simply:

• updates azure.yaml to include services to deploy and removes hooks for scripts
• deletes /scripts folders
• moved a copy of /scripts to /iac/scripts with a readme for future reference/archive purposes.

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information

[im-samz]

Looks great!