Add react-theme-provider and react-stylesheet packages in 7.0 branch

[xugao]

Pull request checklist

• Addresses an existing issue: Fixes #0000
• Include a change request file using $ yarn change

Description of changes

Add react-theme-provider and react-stylesheet packages in 7.0 branch, because:

1. version for dependency react-window-provider package has fall behind. (it was previously bumped to major version 1). Therefore we should publish new version of react-theme-provider in order to avoid package duplications for users.
2. We will be exporting react-theme-provider from v7 OUFR later.

Focus areas to test

(optional)

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 69cad72:

Sandbox	Source
Fluent UI Button	Configuration
codesandbox-react-template	Configuration

[msft-github-bot]

Perf Analysis

No significant results to display.

All results

Scenario	Render type	7.0 Ticks	PR Ticks	Iterations	Status
BaseButton	mount	931	911	5000
Breadcrumb	mount	39498	39330	5000
Checkbox	mount	1592	1623	5000
CheckboxBase	mount	1329	1344	5000
ChoiceGroup	mount	5043	5023	5000
ComboBox	mount	916	903	1000
CommandBar	mount	7414	7379	1000
ContextualMenu	mount	12504	12349	1000
DefaultButton	mount	1130	1145	5000
DetailsRow	mount	3549	3609	5000
DetailsRowFast	mount	3634	3602	5000
DetailsRowNoStyles	mount	3487	3552	5000
Dialog	mount	1570	1505	1000
DocumentCardTitle	mount	1794	1841	1000
Dropdown	mount	2584	2637	5000
FocusTrapZone	mount	1780	1719	5000
FocusZone	mount	1891	1849	5000
IconButton	mount	1846	1869	5000
Label	mount	329	333	5000
Layer	mount	2022	1967	5000
Link	mount	442	454	5000
MenuButton	mount	1571	1528	5000
MessageBar	mount	2083	2075	5000
Nav	mount	3366	3391	1000
OverflowSet	mount	1465	1499	5000
Panel	mount	1468	1455	1000
Persona	mount	823	829	1000
Pivot	mount	1415	1428	1000
PrimaryButton	mount	1325	1287	5000
Rating	mount	7824	7719	5000
SearchBox	mount	1307	1307	5000
Shimmer	mount	2583	2580	5000
Slider	mount	1479	1475	5000
SpinButton	mount	5039	5080	5000
Spinner	mount	402	393	5000
SplitButton	mount	3169	3218	5000
Stack	mount	507	486	5000
StackWithIntrinsicChildren	mount	1545	1577	5000
StackWithTextChildren	mount	4739	4849	5000
SwatchColorPicker	mount	10168	10321	5000
TagPicker	mount	2805	2773	5000
TeachingBubble	mount	47569	47901	5000
Text	mount	429	429	5000
TextField	mount	1398	1388	5000
Toggle	mount	805	834	5000
button	mount	98	98	5000

[size-auditor]

Asset size changes

Size Auditor did not detect a change in bundle size for any component!

Baseline commit: 3facc40caa530b05a4fa970d34a3b579f5f46f6c (build)

[msft-github-bot]

🎉@fluentui/react-theme-provider@v0.16.3 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Official NPM Release

[msft-github-bot]

🎉@fluentui/react-examples@v0.8.6 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Official NPM Release

[msft-github-bot]

🎉@fluentui/react-stylesheets@v0.2.4 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Official NPM Release