refactor: break utils up a bit and remove old/outdated types (#1127)

* refactor: move `detectJestVersion` into `utils` folder

* refactor: remove inaccurate types and unused property enums

* refactor: move `expect` parsing utils into `parseExpectCall` file

* refactor: move type cast and assertion utils into their own file

* refactor: finish moving rest of utils into subfolder

src/rules/__tests__/no-deprecated-functions.test.ts

@@ -1,8 +1,8 @@
 import { TSESLint } from '@typescript-eslint/utils';
-import { JestVersion, detectJestVersion } from '../detectJestVersion';
 import rule from '../no-deprecated-functions';
+import { JestVersion, detectJestVersion } from '../utils/detectJestVersion';
 
-jest.mock('../detectJestVersion');
+jest.mock('../utils/detectJestVersion');
 
 const detectJestVersionMock = detectJestVersion as jest.MockedFunction<
   typeof detectJestVersion

src/rules/no-deprecated-functions.ts

@@ -1,6 +1,10 @@
 import { AST_NODE_TYPES, TSESTree } from '@typescript-eslint/utils';
-import { JestVersion, detectJestVersion } from './detectJestVersion';
-import { createRule, getNodeName } from './utils';
+import {
+  JestVersion,
+  createRule,
+  detectJestVersion,
+  getNodeName,
+} from './utils';
 
 interface ContextSettings {
   jest?: EslintPluginJestSettings;