Add check for input file in CLI Run method

[catatsuy]

This pull request primarily focuses on improving the user experience and dependencies management in the cli/cli.go and go.mod files respectively. The most significant changes include the addition of a new package in the import statements, a new condition in the Run function to handle terminal input, and the inclusion of new dependencies in the go.mod file.

Changes to cli/cli.go:

• Imported the golang.org/x/term package to handle terminal inputs.
• Added a condition in the Run function to check if the input is from a terminal and return an error if no input file is specified.

Changes to go.mod:

• Added golang.org/x/sys and golang.org/x/term as indirect dependencies to the project.