feat: app dependency injection-based config init

[aaronc]

Description

Closes: #9864

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[lgtm-com]

This pull request introduces 1 alert when merging 233fa70 into f265287 - view on LGTM.com

new alerts:

• 1 for Off-by-one comparison against length

[lgtm-com]

This pull request introduces 1 alert when merging 4b7d22e into bf11b1b - view on LGTM.com

new alerts:

• 1 for Off-by-one comparison against length

[lgtm-com]

This pull request introduces 1 alert when merging 1e1d7c2 into 3138527 - view on LGTM.com

new alerts:

• 1 for Off-by-one comparison against length