chore: add golangci-lint configuration

Author: renatomarinho

.golangci.yml

@@ -0,0 +1,29 @@
+run:
+  timeout: 5m
+  go: '1.21'
+  
+linters:
+  disable-all: true
+  enable:
+    - errcheck
+    - gosimple
+    - govet
+    - ineffassign
+    - staticcheck
+    - unused
+
+linters-settings:
+  govet:
+    enable-all: false
+    enable:
+      - nilness
+      - shadow
+  staticcheck:
+    checks:
+      - all
+      - -SA1019  # Ignore deprecated warnings
+
+issues:
+  exclude-use-default: false
+  max-issues-per-linter: 50
+  max-same-issues: 10