[Integrated Vectorization] Changes for Admin Configuration page

[komalg1]

Purpose

• Resolves Updating Admin Config page to allow configuring the page length & page overlap & hide the layout chunking strategy part #762
• Related to Add integrated vectorization as an option vs. push mechanism (including vectorizers) and keep, document both approaches #321
• This PR adds Max page length & overlap length config values that can be modified from Admin configuration page.
• Adds a factory method for Processing the ingested file.
• Added & updated unit tests

Does this introduce a breaking change?

[x] Yes
[ ] 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

If 'AZURE_SEARCH_USE_INTEGRATED_VECTORIZATION' is true, user should be able to see two input values for Max page length & overlap length

What to Check

Verify that the following are valid

• Any updates to the config values should be saved.

[ross-p-smith]

Thank you fixing all my comments!

[cecheta]

Thanks!

[gaurarpit]

LGTM

[cecheta]

Nice