Add Sorbet ruby linter and fixer (#2614)

doc/ale-ruby.txt

@@ -129,6 +129,26 @@ g:ale_ruby_solargraph_executable             *g:ale_ruby_solargraph_executable*
   from binstubs or a bundle.
 
 
+===============================================================================
+sorbet                                                        *ale-ruby-sorbet*
+
+g:ale_ruby_sorbet_executable                     *g:ale_ruby_sorbet_executable*
+                                                 *b:ale_ruby_sorbet_executable*
+  Type: String
+  Default: `'srb'`
+
+  Override the invoked sorbet binary. Set this to `'bundle'` to invoke
+  `'bundle` `exec` srb'.
+
+
+g:ale_ruby_sorbet_options                           *g:ale_ruby_sorbet_options*
+                                                    *b:ale_ruby_sorbet_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be change to modify flags given to sorbet.
+
+
 ===============================================================================
 standardrb                                                *ale-ruby-standardrb*
 

doc/ale-supported-languages-and-tools.txt

@@ -392,6 +392,7 @@ Notes:
   * `ruby`
   * `rufo`
   * `solargraph`
+  * `sorbet`
   * `standardrb`
 * Rust
   * `cargo`!!

doc/ale.txt

@@ -2220,6 +2220,7 @@ documented in additional help files.
     ruby..................................|ale-ruby-ruby|
     rufo..................................|ale-ruby-rufo|
     solargraph............................|ale-ruby-solargraph|
+    sorbet................................|ale-ruby-sorbet|
     standardrb............................|ale-ruby-standardrb|
   rust....................................|ale-rust-options|
     cargo.................................|ale-rust-cargo|