Returns whether +self+ starts with any of the given +patterns+.

For each argument, the pattern used is:

- The pattern itself, if it is a Regexp.
- <tt>Regexp.quote(pattern)</tt>, if it is a string.

Returns +true+ if any pattern matches the beginning, +false+ otherwise:

  'hello'.start_with?('hell')               # => true
  'hello'.start_with?(/H/i)                 # => true
  'hello'.start_with?('heaven', 'hell')     # => true
  'hello'.start_with?('heaven', 'paradise') # => false
  'こんにちは'.start_with?('こ')              # => true

Related: see {Querying}[rdoc-ref:String@Querying].
