Add API Auth: Bearer token

[ashitaprasad]

Tell us about the task you want to perform and are unable to do so because the feature is not available

Add Bearer token authentication support for APIs where user can specify an access key, such as a JSON Web Token (JWT)

[Clasherzz]

@ashitaprasad Would a simple UI like this be okay for this ?
Also proper rendering of Bearer Token with spaces is kind of hard when we use ADDropdownButton . Should we continue to use this here or try making a new widget ?

[ashitaprasad]

@ashitaprasad Would a simple UI like this be okay for this ? Also proper rendering of Bearer Token with spaces is kind of hard when we use ADDropdownButton . Should we continue to use this here or try making a new widget ?

You can send a draft PR. I will take a look into the issue of ADDropdownButton in your PR.