GitLab

* [feat] Adds the implementaion for the wgit add functionality, with sha1 hash creation, reference tracking, dependency graph creation and all related functionalities for the wgit add method.

* [feat] Adds the wgit add and wgit commit functionalities and major refactors.

1. Adds the wgit add and wgit commit functionalities to the api.
2. Introduces a new PyGit class that wraps the internal .wgit/.git repo.
3. Refactors the Repo class in the api, and introduces some methods.
4. .Refactors all the classes which no longer uses @staticmethods and now uses object istances instead.
5.  Moved many of the directory path handling code from os.path to pathlib library.

* [Feat] Combines the Repo and Weigit classes. Separate claases into separate modules.

1. Combines the functionalities of the WeiGit and Repo class into a single WeiGitRepo class.
2. Classes are now separated into their own modules.
3. Moved some functions and staticmethod to utils.
4. Adds a range of tests for add and commit functionalities of weigit.

* [fix] adds a new test to the ci_test_list_3

* [fix] test fix

* [fix] test fix

* [Feat] Directory restructuring, type checking and some standardization
1. Restructured the directory and moved wgit to fairscale/experimental/wgit so that it can be found as a package when pip installed.
2. Added a range of type checking
3. Some refactors

* [Feat][Refactor] Directory restructuring, test addition and type checking
1. Restructed the test directory
2. Added and modified a few wgit tests.
3. Added some type checking to the code

* test fix

* "setup fix and repo checking added in cli"

* [Feat] Better initialization and error handling for init and wgit subcommands. Test reorg.

* [refactor] Changes in classes, encapsulation and addition of PyGit test.

* [Feat][Refactor]
1. Changed some class method arguments for better encapsulation for Sha1_store.
2. Moved sha1 hash calculation within sha1_store.
3. Some standardization and code clean up of unnecessary snippets.
4. Added new tests for the PyGit and Sha1_Store class.