Add coc-settings.json

coc-settings.json

@@ -1,2 +1,13 @@
 {
+	"languageserver": {
+		"rust": {
+			"command": "/usr/bin/rust-analyzer",
+			"filetypes": ["rust"],
+			"rootPatterns": ["Cargo.toml"]
+		},
+		"latex": {
+			"command": "/sbin/texlab",
+			"filetypes": [ "tex","bib","plaintex","context" ]
+		}
+	}
 }