feat(@angular-devkit/build-angular): support ~ path for dev-server ssl

[titan-ron]

PR Checklist

Please check to confirm your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular-cli/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

When utilizing the @angular-devkit/build-angular:dev-server (serve) builder for local development of applications with SSL, it's not possible to set a default value in the project configuration using ~. Instead, you must specify it through arguments, move it to the workspace, or wrap the Angular builder.

Issue Number: N/A

What is the new behavior?

This PR will manage the use of ~ for the sslCert and sslKey options.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[alan-agius4]

Hey @titan-ron, thank you for your contribution. We discussed and whilst the tilde expansion is a common feature in Unix-like systems, such as Bash shells. Therefore, we prefer keeping it separate from the configuration to avoid potential inconsistencies.