Packages/utils (#2863)

* Implemented the utils package
- Refactored the `packages/core/src/utils.js` file into separate typescript files in the new `packages/utils/src`

* - More changes

* - Added all of the non-validation-based utilities and many of the tests

* - removed schema related files temporarily

* - Added missing tests to get test coverage up to 100% for all but `getWidget()`
- Also did some cleanup in the `src` files, moving types into `types.ts`, and exporting all the types

* - Fixed getWidget tests

* - Update README.md

* - update the target to  for typescript in

* - revert `package-lock.json` for antd, core and playground

* - fix build issues

* - Added the `rjsf-v5` branch to the `ci.yml`
- Added a new `RJSFSchema` as a redefine of `JSONSchema7` to make changing schemas everywhere else easier
- Updated all the utils and tests to change `JSONSchema7` to `RJSFSchema`
- Fixed test breaks by casting e to Error

* - changed tabs to spaces in package.json, fixed bug in deepEquals

* - Add `tsdx` to `package.json` to enable running `npm run test` inside of the `packages/utils` directory
  - Bumped `@types/jest` to match the version in use by `tsdx`
- Fixed the `utcToLocal()` test by mocking the `getDate()` and `getHours()` functions to be UTC + 2 hours to avoid server vs local timezone issues

* - Began adding documentation to the utility functions
- Reordered the logic in `asNumber` to avoid converting to number until we have to
- Updated `findSchemaDefinition()` to handle the case where a `$ref` in a schema also contains additional props
- Updated `getSubmitButtonOptions()` to export its `DEFAULT_OPTIONS` for testing purposes
- Updated `getUiOptions()` to no longer support `ui:widget` objects as it has been deprecated for years
- Made some other test fixes

* - Finished adding documentation to all of the remaining utils methods

* - Minor documentation changes, and allow `findSchemaDefinition()` to support undefined ref name

* - Responded to self-review comments

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [ master, rjsf-v5 ]
   pull_request:
-    branches: [ master ]
+    branches: [ master, rjsf-v5 ]
 
 jobs:
   build:
@@ -22,7 +22,7 @@ jobs:
     - run: npm ci
     - run: npm run lint
     - run: npm run cs-check
-    
+
     - name: Build with Netlify badge
       if: github.ref != 'refs/heads/master'
       run: npm run build
@@ -31,14 +31,14 @@ jobs:
     - name: Build
       if: github.ref == 'refs/heads/master'
       run: npm run build
-    
+
     - if: matrix.node-version == '14.x'
       uses: actions/upload-artifact@v2
       with:
         name: dist
         path: packages/playground/build
     - run: npm test
-    
+
   deploy_preview:
     runs-on: ubuntu-latest
     if: github.ref != 'refs/heads/master'
@@ -58,7 +58,7 @@ jobs:
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
           PR_NUMBER: ${{ github.event.pull_request.number }}
-  
+
   deploy_playground:
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/master'
@@ -78,7 +78,7 @@ jobs:
           build_dir: dist
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-  
+
   # deploy_canary:
   #   runs-on: ubuntu-latest
   #   if: github.ref == 'refs/heads/master'