feat: user should be able to appeal against flag

[varbhat]

CLA

• [x] I have signed the Stream CLA (required).
• [x] Code changes are tested

Description of the changes, What, Why and How?

• Added Appeal API support

Changelog

• Added appeal API support

[github-actions[bot]]

Size Change: +1.12 kB (+0.31%)

Total Size: 358 kB

Filename	Size	Change
dist/cjs/index.browser.js	119 kB	+366 B (+0.31%)
dist/cjs/index.node.js	120 kB	+370 B (+0.31%)
dist/esm/index.mjs	118 kB	+384 B (+0.33%)

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