[bug#42606] add sbcl-cl-inflector, pls

[Adam Kandur]

hi, don't have any experience in contributing. but here is code for 
sbcl-cl-inflector

(define-public sbcl-cl-inflector
  (let ((commit "f1ab16919ccce3bd82a0042677d9616dde2034fe")
    (revision "1"))
    (package
      (name "sbcl-cl-inflector")
      (version (git-version "0.0.0" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/AccelerationNet/cl-inflector";)
               (commit commit)))
         (file-name (git-file-name name version))
         (sha256
          (base32 "1xwwlhik1la4fp984qnx2dqq24v012qv4x0y49sngfpwg7n0ya7y"))))
      (build-system asdf-build-system/sbcl)
      (inputs
       `(("cl-ppcre" ,sbcl-cl-ppcre)
     ("alexandria" ,sbcl-alexandria)
     ("lisp-unit2" ,sbcl-lisp-unit2)))
      (home-page "https://github.com/AccelerationNet/cl-inflector";)
      (synopsis "A library to pluralize and singularize English and Portuguese 
words.")
      (description "A common lisp library to easily pluralize and singularize 
English and Portuguese words.
This is a port of the ruby ActiveSupport Inflector module.")
      (license license:expat))))