build: add node-acme-client copy

packages/core/acme-client/.eslintrc.yml

@@ -0,0 +1,23 @@
+extends:
+  - 'airbnb-base'
+
+env:
+  browser: false
+  node: true
+  mocha: true
+
+rules:
+  indent: [2, 4, { SwitchCase: 1, VariableDeclarator: 1 }]
+  brace-style: [2, 'stroustrup', { allowSingleLine: true }]
+  space-before-function-paren: [2, { anonymous: 'never', named: 'never' }]
+  func-names: 0
+  prefer-destructuring: 0
+  object-curly-newline: 0
+  class-methods-use-this: 0
+  wrap-iife: [2, 'inside']
+  no-param-reassign: 0
+  comma-dangle: [2, 'never']
+  max-len: [1, 200, 2, { ignoreUrls: true, ignoreComments: false }]
+  no-multiple-empty-lines: [2, { max: 2, maxBOF: 0, maxEOF: 0 }]
+  prefer-object-spread: 0
+  import/no-useless-path-segments: 0