chore: add golangci-lint config

Author: aereal

.golangci.yml

@@ -0,0 +1,80 @@
+---
+linters:
+  disable-all: true
+  enable:
+    - asasalint
+    - bidichk
+    - bodyclose
+    - contextcheck
+    - durationcheck
+    - errcheck
+    - errchkjson
+    - errorlint
+    - exhaustive
+    - gocheckcompilerdirectives
+    - gochecksumtype
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - makezero
+    - nilerr
+    - reassign
+    - recvcheck
+    - spancheck
+    - staticcheck
+    - thelper
+    - unparam
+    - unused
+    - usetesting
+linters-settings:
+  errcheck:
+    check-type-assertions: true
+    check-blank: true
+    disable-default-exclusions: false
+  govet:
+    disable-all: true
+    enable:
+      - appends
+      - asmdecl
+      - assign
+      - atomic
+      - atomicalign
+      - bools
+      - buildtag
+      - cgocall
+      - composites
+      - copylocks
+      - deepequalerrors
+      - defers
+      - directive
+      - errorsas
+      - fieldalignment
+      - findcall
+      - framepointer
+      - httpresponse
+      - ifaceassert
+      - loopclosure
+      - lostcancel
+      - nilfunc
+      - nilness
+      - printf
+      - reflectvaluecompare
+      - shadow
+      - shift
+      - sigchanyzer
+      - slog
+      - sortslice
+      - stdmethods
+      - stdversion
+      - stringintconv
+      - structtag
+      - testinggoroutine
+      - tests
+      - timeformat
+      - unmarshal
+      - unreachable
+      - unsafeptr
+      - unusedresult
+      - unusedwrite
+      - waitgroup