GitHub Action to truncate text by line count or character count and optionally add a 'read more' line at the end

• text - The text to truncate. (Required)
• max_lines - The maximum number of lines to keep. (Optional)
• max_chars - The maximum number of characters to keep. (Optional)
• read_more - The "Read More" line to append to bottom of the output. (Optional)

Either max_lines or max_chars is required.

If read_more is specified, a newline and then the read_more line will be appended to the output.

• text - The truncated text