add revert paev action

[area363]

It removes the last pair of the PAEV if a mistake is made.

Before Action:

"ActionEvaluator": {
    "type": "ForkableActionEvaluator",
    "pairs": [
        {
            "range": {
                "start": 0,
                "end": 236433
            },
            "actionEvaluator": {
                "type": "PluggedActionEvaluator",
                "pluginPath": "https://lib9c-plugin.s3.us-east-2.amazonaws.com/36447a901fc71cd3ea5e737be57878200567df77/linux-arm64.zip"
            }
        },
        {
            "range": {
                "start": 236434,
                "end": 9223372036854775807
            },
            "actionEvaluator": {
                "type": "PluggedActionEvaluator",
                "pluginPath": "https://lib9c-plugin.s3.us-east-2.amazonaws.com/e639502afb22df4d230d52002b519b3f8ef16b4f/linux-arm64.zip"
            }
        }
    ]
}

After Action:

"ActionEvaluator": {
    "type": "ForkableActionEvaluator",
    "pairs": [
        {
            "range": {
                "start": 0,
                "end": 9223372036854775807
            },
            "actionEvaluator": {
                "type": "PluggedActionEvaluator",
                "pluginPath": "https://lib9c-plugin.s3.us-east-2.amazonaws.com/36447a901fc71cd3ea5e737be57878200567df77/linux-arm64.zip"
            }
        }
    ]
}