New plugin config option for all plugins

[tungleduyxyz]

Related issues:

• Feature: Plugin Configuration should be displayed near the plugins killbill-admin-ui#581: Move plugin in config to KPM

[Copilot]

Pull request overview

This PR adds support in the KPM UI to view and upload per-tenant plugin configuration for (running) plugins, aligning with the goal of moving plugin configuration into KPM.

Changes:

• Adds a new POST route and controller action to upload tenant plugin configuration.
• Fetches existing PLUGIN_CONFIG_ tenant keys and passes them to the plugins UI.
• Adds a “Config” action in the plugins list and renders a Bootstrap modal with an upload form, plus minimal styling.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
config/routes.rb	Adds the POST endpoint to upload plugin configuration.
app/controllers/kpm/nodes_info_controller.rb	Fetches existing tenant plugin config on index; implements the upload action.
app/views/kpm/nodes_info/index.html.erb	Passes tenant plugin config data into the plugins partial.
app/views/kpm/nodes_info/_official_plugins.html.erb	Adds “Config” link and renders config modals.
app/views/kpm/nodes_info/_form_plugin_config.erb	New modal + form for editing/uploading plugin config.
app/assets/stylesheets/kpm/nodes_info.css	Adds styling for the plugin config modal elements.

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