allow overrides for next-gen profiles

[bcle]

Allow some input parameters to apps/bundles to be overridden.

• Support Helm value overrides at the very least
• Stretch goal: allow patches to arbitrary manifests

Aha! Link: https://pf9.aha.io/features/ARLON-130

[cruizen]

Hey team! Please add your planning poker estimate with Zenhub @bcle @jayanth-tjvrr @Rohitrajak1807 @ShaunakJoshi1407

[cruizen]

Moving this out of v0.11