fix(.gitignore): remove .clangd from ignored files

feuille was being killed by SIGPIPE when it tried to send data to an
already closed socket (e.g. when someone did a nmap scan on feuille's
port.)

.gitignore

@@ -1,5 +1,3 @@
-.clangd
-
 *.o
 
 feuille

feuille.c

@@ -270,6 +270,11 @@ int main(int argc, char *argv[])
         daemon(1, 0);
     }
 
+    /* ignore most signals that could kill feuille */
+    verbose(3, "ignoring signals that could kill feuille...");
+
+    signal(SIGPIPE, SIG_IGN); /* when send(2) or write(2) fails */
+
 
     /* chroot and drop root permissions */
     if (getuid() == 0) {