initial commit, add bitget rest api and websockets connector

.eslintrc.js

@@ -0,0 +1,36 @@
+module.exports = {
+  env: {
+    es6: true,
+    node: true,
+  },
+  extends: ['eslint:recommended'],
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 9
+  },
+
+  plugins: [],
+  rules: {
+    'array-bracket-spacing': ['error', 'never'],
+    indent: ['warn', 2],
+    'linebreak-style': ['error', 'unix'],
+    'lines-between-class-members': ['warn', 'always'],
+    semi: ['error', 'always'],
+    'new-cap': 'off',
+    'no-console': 'off',
+    'no-debugger': 'off',
+    'no-mixed-spaces-and-tabs': 2,
+    'no-use-before-define': [2, 'nofunc'],
+    'no-unreachable': ['warn'],
+    'no-unused-vars': ['warn'],
+    'no-extra-parens': ['off'],
+    'no-mixed-operators': ['off'],
+    quotes: [2, 'single', 'avoid-escape'],
+    'block-scoped-var': 2,
+    'brace-style': [2, '1tbs', { allowSingleLine: true }],
+    'computed-property-spacing': [2, 'never'],
+    'keyword-spacing': 2,
+    'space-unary-ops': 2,
+    'max-len': ['warn', { 'code': 140 }]
+  }
+};