Add @ni/unit-format library (#2787)

# Pull Request

## 🤨 Rationale

Moves `UnitFormat` to a standalone npm library and modifies it to be
usable from both browser and node applications.

## 👩‍💻 Implementation

- Added `@ni/unit-format` using node esm compliant import paths
- Breaking: Renamed types to align with folder layout and with nimble
components naming conventions, [see
discussion](#2787 (comment)).
- Did regex searches for `\w+unitformat` and `\w+unitscale` which are
the primary uses of the public api for missed renames

## 🧪 Testing

- Added jasmine node and karma browser tests
- Draft [SystemLinkShared
PR](https://dev.azure.com/ni/DevCentral/_git/Skyline/pullrequest/1139993),
looks like usage was well-encapsulated so trivial change

## ✅ Checklist

- [x] I have updated the project documentation to reflect my changes or
determined no changes are needed. Added README and Contributing for
library.

Author: rajsite

README.md

@@ -69,11 +69,13 @@ Tools and utilities hosted in the repository.
 
 [![Nimble Tokens NPM version and repo link](https://img.shields.io/npm/v/@ni/nimble-tokens.svg?label=@ni/nimble-tokens)](https://www.npmjs.com/package/@ni/nimble-tokens)
 [![Jasmine parameterized NPM version and repo link](https://img.shields.io/npm/v/@ni/jasmine-parameterized.svg?label=@ni/jasmine-parameterized)](https://www.npmjs.com/package/@ni/jasmine-parameterized)
+[![Unit Format NPM version and repo link](https://img.shields.io/npm/v/@ni/unit-format.svg?label=@ni/unit-format)](https://www.npmjs.com/package/@ni/unit-format)
 [![XLIFF to JSON Converter for Angular NPM version and repo link](https://img.shields.io/npm/v/@ni/xliff-to-json-converter.svg?label=@ni/xliff-to-json-converter)](https://www.npmjs.com/package/@ni/xliff-to-json-converter)
 
 - [`@ni/nimble-tokens`](/packages/nimble-tokens/) - Base design tokens used by the Nimble and Spright component packages.
-- [`@ni/jasmine-parameterized`](/packages/jasmine-parameterized/) - a utility for writing [Jasmine](https://jasmine.github.io/) parameterized tests.
-- [`@ni/xliff-to-json-converter`](/packages/xliff-to-json-converter/) - a utility to convert translation files from XLIFF to JSON for Angular localization.
+- [`@ni/jasmine-parameterized`](/packages/jasmine-parameterized/) - A utility for writing [Jasmine](https://jasmine.github.io/) parameterized tests.
+- [`@ni/unit-format`](/packages/unit-format/) - NumberFormat aligned library to format numbers with scaled units.
+- [`@ni/xliff-to-json-converter`](/packages/xliff-to-json-converter/) - A utility to convert translation files from XLIFF to JSON for Angular localization.
 
 The above packages follow [Semantic Versioning](https://semver.org). Consult the `CHANGELOG.md` for each package to see the changes in each version, including instructions for adapting your application in response to breaking changes.
 

change/@ni-nimble-angular-4bbf8b02-27a1-4694-a47c-70da12f40be8.json

@@ -0,0 +1,7 @@
+{
+  "type": "major",
+  "comment": "Breaking: `@ni/nimble-angular/pipes` unit scales renamed, i.e. `byteUnitScale` to `unitScaleByte`",
+  "packageName": "@ni/nimble-angular",
+  "email": "rajsite@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

change/@ni-nimble-components-3ee33c61-aa6a-46d6-8c9e-7c7aa4cb422a.json

@@ -0,0 +1,7 @@
+{
+  "type": "major",
+  "comment": "Breaking: Rename `NumberTextUnitFormat` to `UnitFormatNumberText`",
+  "packageName": "@ni/nimble-components",
+  "email": "rajsite@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

change/@ni-unit-format-2428c33b-44f1-4a82-9c10-4bcee0b0779c.json

@@ -0,0 +1,7 @@
+{
+  "type": "major",
+  "comment": "First release of `@ni/unit-format` 🎉",
+  "packageName": "@ni/unit-format",
+  "email": "rajsite@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}