feat(form): add provideSFConfig

[cipchk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1702 (fa3d555) into master (065316a) will decrease coverage by 0.31%.
The diff coverage is 66.23%.

❗ Current head fa3d555 differs from pull request most recent head 4ac35a9. Consider uploading reports for the commit 4ac35a9 to get more accurate results

@@            Coverage Diff             @@
##           master    #1702      +/-   ##
==========================================
- Coverage   95.45%   95.14%   -0.31%     
==========================================
  Files         301      315      +14     
  Lines        8828     8864      +36     
  Branches     1659     1661       +2     
==========================================
+ Hits         8427     8434       +7     
- Misses        331      359      +28     
- Partials       70       71       +1     

Files	Coverage Δ
packages/form/src/provide.ts	100.00% <100.00%> (ø)
packages/form/widgets/autocomplete/index.ts	100.00% <100.00%> (ø)
packages/form/widgets/autocomplete/widget.ts	98.18% <100.00%> (-1.82%)	⬇️
packages/form/widgets/cascader/index.ts	100.00% <100.00%> (ø)
packages/form/widgets/cascader/widget.ts	100.00% <ø> (ø)
packages/form/widgets/color/index.ts	100.00% <100.00%> (ø)
packages/form/widgets/color/widget.ts	100.00% <ø> (ø)
packages/form/widgets/mention/index.ts	100.00% <100.00%> (ø)
packages/form/widgets/mention/widget.ts	94.73% <ø> (ø)
packages/form/widgets/qr-code/index.ts	100.00% <100.00%> (ø)
... and 30 more

... and 1 file with indirect coverage changes