added the recent actions feature when search bar is empty

[hriztam]

Added the feat #204

• Stores the recent actions data onto the disk itself so that it does not get reset with every with session
• Current limit of recent actions is 5 which can we modified in the config.toml
• Store format: ~/.config/rustcast/recent_actions.json with versioned schema, e.g. {"version":1,"keys":["settings","iterm",...]}
• Creating another pr cause the last one got messed up with the merge conflicts

fixes #204

[unsecretised]

Is it possible to change the recent actions to be stored in the apps state instead of a json file? this is because I don't want to create more files than i have to on the users system

[hriztam]

@unsecretised ok I can store it in the apps state

[unsecretised]

Rather than recent actions maybe it could be the most used (done via using the ranking and giving top 5 rankings) when there is no query