[Chat] Added Sample For File Sharing

[jpeng-ms]

Purpose

File Sharing Sample reference to be updated to 1.3.0 once package is available:

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information

[palatter]

@jpeng-ms , Minor thing but I notice the new folders have spaces in the names. To be consistent with the rest of the repo and .net in general we should try to use CamelCase.

[palatter]

Lets also use one solution file in the root and each sub folder has it's own project file.