Refactored the Action interface in the plugins package to separate the configuration step from the process method. The new Config method accepts a configuration map and returns an error. The modified server.go uses this Config method to apply configurations before calling Process. File action plugin specifically has been updated to support this new interface where configurations are now updated via Config method before invoking Process.
Introduced an Actions interface for plugins in 'action.go' and implemented a corresponding registry in 'registry.go'. Additionally, adjusted rule related behavior in 'Server' to account for actions, with relevant new fields in Ruleset and Rule. This enables multiple actions on a log message based on defined rules and further modularises the codebase, paving the path for addition of more plugin actions.