add option ignoreFile to ignore file's contents like .gitignore

[its-dibo]

as mentioned in docs the commit will include everything in assets even if it is included in .gitignore.

you can add an option to ignore a file's contents like that

["@semantic-release/git", {
  assets: ["**/*.*"],
  ignoreFile= '.gitignore'
}]

this approach is used by many tools tile eslint and prettier

also, it is a good idea to add an option to include changed files only