LSP option and better LSP status

runtime/plugins/status/status.lua

@@ -34,9 +34,21 @@ function size(b)
 end
 
 function lsp(b)
+    if not b.Settings["lsp"] then
+        return "disabled"
+    end
     if b:HasLSP() then
         return "on"
     end
+
+    local lsp = import("micro/lsp")
+    local l, ok = lsp.GetLanguage(b.Settings["filetype"])
+    if not ok then
+        return "unsupported"
+    end
+    if not l:Installed() then
+        return l.Command .. " not installed"
+    end
     return "off"
 end