Add view secret value action for secrets manager

[ldziedziul]

Press 'x' on a secret to retrieve and display its decrypted value in the JSON viewer.

Related Issue

Closes #90

Description

Adds a new action type show_result for actions that retrieve and display data rather than executing mutations. When triggered, these actions fetch data from AWS and display it in the JSON viewer (Describe mode).

Changes:

• Added show_result field to ActionDef for read-only actions that return displayable data
• Implemented execute_action_with_result() in dispatch module for Secrets Manager's GetSecretValue API
• show_result actions are allowed even in readonly mode since they don't mutate resources
• The viewer title shows the action name (e.g., "Secret Value") instead of "Details"

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)

Checklist

• I have linked this PR to an existing issue
• My code follows the project's code style
• I have tested my changes locally
• I have added/updated relevant documentation (if applicable)
• My changes don't introduce new warnings

Screenshots (if applicable)

[huseyinbabal]

@ldziedziul Thanks for the contribution, it works like a charm, but can we use x instead of v to follow convention of k9s? This project is highly inspired from that project and x is used for decoding secrets in k8s and actually I like x key since it is like you are looking at "x files", thanks in advance 🙏

[ldziedziul]

@ldziedziul Thanks for the contribution, it works like a charm, but can we use x instead of v to follow convention of k9s? This project is highly inspired from that project and x is used for decoding secrets in k8s and actually I like x key since it is like you are looking at "x files", thanks in advance 🙏

@huseyinbabal sure thing, done: 12ff930

[huseyinbabal]

@ldziedziul do not forget to fix PR check failure

[huseyinbabal]

@ldziedziul Feel free to merge so that I can introduce another release candidate

[ldziedziul]

I see no merge button :)

[huseyinbabal]

Merged, thanks for you effor 🙏 a new version will be arrived soon