[feat:stash] add stash API for push, apply, pop, drop, list and clean #228 #980 #1878 (#1898)

* feat[stash]: add canonical stash support, including push, apply, pop, drop, list and clear, plus 18 test cases

* maint: rebase from main and docs update

* [feat:stash]: added sub directory support and more tests

* [feat:stash]: added stash directory prep to avoid exception

* [feat:stash] feature complete for issue #228 and issue #980, also add more test cases for changes and deletion under a folder

* [feat:stash] add GitRefStash and GitStashManager, more tests and documentation

* [feat:stash] doc update

* [feat:stash] doc updates in api/stash.js

* [feat:stash] correct spelling in comments

* [feat/stash] try to fix tests after rebase

* feat[stash]: fix the tests for karma

* [feat/stash]: add ref(refIdx) to apply, pop and drop, more tests, and correct the codespell error, plus other tweaks

* [feat:stash] tweek the test code

* [feat:stash] update stash.md

* force CI/CD

* [feat:stash] fix azure pipeline error on textDecoder().decode

* [feat:stash] fix azure pipeline error on textDecoder().decode - 2

* [feat:stash] fix azure pipeline error on textDecoder().decode - 3

* [feat:stash] fix azure pipeline error on makeFixtureStash

* [feat:stash] fix azure pipeline error on shared stashChanges

* Trigger CI/CD

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Co-authored-by: Jakub Jankiewicz <[email protected]>

Author: 2 people