migrate configuration to v2

Author: kirillrdy

testdata/loadconfig/.golangci.yaml

@@ -1,5 +1,24 @@
+version: "2"
 linters:
   enable:
     - wsl
   disable:
     - unused
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$