feat : added API Key and Bearer Token Authorizations

[maiHydrogen]

PR Description

Added two methods of API request Authentication - API Key and Bearer Token by building upon the same approach as taken in PR #680. following tasks were done in this PR -

• tested the both methods with some real api endpoints.
• added the logic for syncing the authHeader with the headers so that authorizations can also be visible on the headers tab
• re arranged the codes to improve understanding and aiding the integration of further auth method seamlessly.
• • inntegrity of HttpRequestModel has been preserved in it too by not adding auth into it instead keeping it inside authHeadeProvider to preventing bloating of model upon adding more auth methods.

Screenshots

Related Issues

• Closes Add API Auth: API key #611 and Add API Auth: Bearer token #612

Checklist

• I have gone through the contributing guide
• I have updated my branch and synced it with project main branch before making this PR
• I am using the latest Flutter stable branch (run flutter upgrade and verify)
• I have run the tests (flutter test) and all tests are passing

OS on which you have developed and tested the feature?

• Windows
• macOS
• Linux

[ashitaprasad]

The implementation requires complete rework and has a lot of inefficiencies (like the drop down implementation).
It is recommended you go through the repo a bit more and prepare a better approach.

[maiHydrogen]

The implementation requires complete rework and has a lot of inefficiencies (like the drop down implementation). It is recommended you go through the repo a bit more and prepare a better approach.

Thanks for feedback ma'am i'll try more efficient approach next time. and also were there any positives in this work so that i can stay with that or i have to completely start from scratch again.