Add CodeAction codeActionLiteralSupport Feature (#4163)

* Advertise codeActionLiteralSupport to LSP server

Without this, rust-analyzer doesn't return any code actions.  With it,
everything works properly.

* linter fixes

* test cases fixes

* Fix underflow of column in position.

Special values like for example -1 to denote the end of a line are not supported.
[reference](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#position)

Co-authored-by: Brian Gernhardt <brian@gernhardtsoftware.com>

autoload/ale/codefix.vim

@@ -457,7 +457,7 @@ function! s:ExecuteGetCodeFix(linter, range, MenuCallback) abort
         let [l:end_line, l:end_column] = getpos("'>")[1:2]
     endif
 
-    let l:column = min([l:column, len(getline(l:line))])
+    let l:column = max([min([l:column, len(getline(l:line))]), 1])
     let l:end_column = min([l:end_column, len(getline(l:end_line))])
 
     let l:Callback = function(

autoload/ale/lsp.vim

@@ -443,6 +443,11 @@ function! s:SendInitMessage(conn) abort
     \               },
     \               'codeAction': {
     \                   'dynamicRegistration': v:false,
+    \                   'codeActionLiteralSupport': {
+    \                        'codeActionKind': {
+    \                            'valueSet': []
+    \                        }
+    \                    }
     \               },
     \               'rename': {
     \                   'dynamicRegistration': v:false,

test/lsp/test_lsp_startup.vader

@@ -194,6 +194,11 @@ Before:
       \           },
       \           'codeAction': {
       \             'dynamicRegistration': v:false,
+      \             'codeActionLiteralSupport': {
+      \                  'codeActionKind': {
+      \                      'valueSet': []
+      \                  }
+      \              }
       \           },
       \           'rename': {
       \             'dynamicRegistration': v:false,