Baseline Improvements to MIQA Annotate, mainly JS/TS Tooling Oriented

[davidshq]

These are changes which I made over the past 9 months that I've now streamlined and grouped together. None of these changes should affect the functionality - they are preparatory to making functionality changes.

There are two key notes to observe here:

1. If you want to run Jest unit tests you need to manually edit the girder dependency.
2. The extraction of the storeConfig from createDirectStore seems to break some of the typing provided by direct-vuex. It is my intention to remove direct-vuex in a future commit.
   • For discussion on whether direct-vuex should be removed please see https://github.com/knowledgevis/miqa-annotate/issues/8 .

Tooling Changes

• Upgrade Webpack from 4.x to 5.x (this requires changing the vue.config.js to replace deprecated port with host and .env.development to remove port from hostname.
• Upgrade ESLint related configuration and dependencies:
  • Add vuetify/recommended (eslint-plugin-vuetify) and @vue/typescript/recommended as linting rules
  • Replace deprecated babel-eslint with @babel/eslint-parser
  • Disable import/extensions rule as it conflicts with other rules
  • Add 'import/resolver' config so that TS related imports are correctly handled
  • Upgrades to eslint, eslint-plugin-import, eslint-plugin-vue, @typescript-eslint/eslint-plugin, @typescript-eslint/parser, @vue/cli-plugin-eslint, @vue/eslint-config-airbnb, @vue/eslint-config-prettier, @vue/eslint-config-typescript
• Add Jest and Vue Test Utils so that unit tests can be performed on the front-end (@vue/cli-plugin-unit-jest, @vue/test-utils, @vue/vue2-jest, babel-jest, jest, jest-transform-stub, ts-jest)
• Upgrades Vue CLI plugins to @vue/cli-plugin-babel, @vue/cli-plugin-typescript, @vue/cli-service
• Upgrade TypeScript from 4.4.2 to 5.75.0

Framework/Library Changes

• Upgrade core-js to non-deprecated version
• Upgrade vuetify from 2.6.3 to 2.6.14
• Upgrade vuex from 3.0.1 to 3.6.2 (required no code changes)

MIQA Vue/Vuex Changes

• The most significant change is extracting the store config from an inline parameter of createDirectStore() to the storeConfig constant. This was necessary to allow Jest to implement limited/local Vuex instances instead of attaching to the main Vuex instance.
• Minor code reformatting per ESLint rules
• Add Jest unit test for setCurrentVtkIndexSlices

Small Changes

• Add a .devcontainer/devcontainer.json file that allows rapid creation of devenv using VSC Dev Containers or GitHub Codespaces
• Ensure that PNG images aren't processed by Git as text
• Ensure that repo forces Linux style line-endings (lf)
• Have Git ignore JetBrain's IDE related files