ci/style: add editorconfig and golangci config

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+
+[Makefile]
+indent_style = tab

.golangci.yml

@@ -0,0 +1,9 @@
+linters-settings:
+    errcheck:
+        exclude-functions:
+            - (io.Writer).Write
+run:
+    skip-files:
+        - internal/php7/scanner.go # Generated
+        - internal/php8/scanner.go # Generated
+    tests: false