feature/eglot2emacs 05418a1d83 054/120: Add omnisharp support for c#

[João Távora]

branch: feature/eglot2emacs
commit 05418a1d836cc76d3e4c8bf5287b8351da523096
Author: Marcus Swanson <marcus.swanson91@gmail.com>
Commit: GitHub <noreply@github.com>

    Add omnisharp support for c#
    
    * eglot.el (eglot-server-programs): Add omnisharp for C#.
    * README.md: Document the above change.
    
    Copyright-paperwork-exempt: Yes
    GitHub-reference: close https://github.com/joaotavora/eglot/issues/897
---
 lisp/progmodes/eglot.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index 83a2945514..1c16240890 100644
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -192,7 +192,8 @@ language-server/bin/php-language-server.php"))
                                 (html-mode . ,(eglot-alternatives 
'(("vscode-html-language-server" "--stdio") ("html-languageserver" "--stdio"))))
                                 (json-mode . ,(eglot-alternatives 
'(("vscode-json-language-server" "--stdio") ("json-languageserver" "--stdio"))))
                                 (dockerfile-mode . ("docker-langserver" 
"--stdio"))
-                                (clojure-mode . ("clojure-lsp")))
+                                (clojure-mode . ("clojure-lsp"))
+                                (csharp-mode . ("omnisharp" "-lsp")))
   "How the command `eglot' guesses the server to start.
 An association list of (MAJOR-MODE . CONTACT) pairs.  MAJOR-MODE
 identifies the buffers that are to be managed by a specific