feat: count assertions for expectEmit

[yash-atreya]

Ref: foundry-rs/foundry#9405

Adds the following cheatcodes to the interface:

    /// Expect a given number of logs with the provided topics.
    function expectEmit(bool checkTopic1, bool checkTopic2, bool checkTopic3, bool checkData, uint64 count) external;

    /// Expect a given number of logs from a specific emitter with the provided topics.
    function expectEmit(
        bool checkTopic1,
        bool checkTopic2,
        bool checkTopic3,
        bool checkData,
        address emitter,
        uint64 count
    ) external;

    /// Expect a given number of logs with all topic and data checks enabled.
    function expectEmit(uint64 count) external;

    /// Expect a given number of logs from a specific emitter with all topic and data checks enabled.
    function expectEmit(address emitter, uint64 count) external;