feat: Added rule objectTypeCurlySpacing (#464)

* feat: Added rule objectTypeCurlySpacing

* docs: generate new README

* chore: add tests

* chore: add more tests + ran create-readme to update docs

* chore: add valid tests

Co-authored-by: Angelica Bocanegra <angelica.bocanegra@tabcorp.com.au>

.README/README.md

@@ -171,6 +171,7 @@ When `true`, only checks files with a [`@flow` annotation](http://flowtype.org/d
 {"gitdown": "include", "file": "./rules/no-types-missing-file-annotation.md"}
 {"gitdown": "include", "file": "./rules/no-unused-expressions.md"}
 {"gitdown": "include", "file": "./rules/no-weak-types.md"}
+{"gitdown": "include", "file": "./rules/object-type-curly-spacing.md"}
 {"gitdown": "include", "file": "./rules/object-type-delimiter.md"}
 {"gitdown": "include", "file": "./rules/require-compound-type-alias.md"}
 {"gitdown": "include", "file": "./rules/require-exact-type.md"}

.README/rules/object-type-curly-spacing.md

@@ -0,0 +1,15 @@
+### `object-type-curly-spacing`
+
+_The `--fix` option on the command line automatically fixes problems reported by this rule._
+
+This rule enforces consistent spacing inside braces of object types.
+
+#### Options
+
+The rule has a string option:
+
+* `"never"` (default): disallows spacing inside of braces.
+* `"always"`: requires spacing inside of braces.
+
+
+<!-- assertions objectTypeCurlySpacing -->