Added Option to add Interceptors on Client Level

[fseidl-bauradar]

Description

Added Possibility to add Client wide Interceptors, to check Request and Responses on multiple positions

Purpose

This pull request is a:

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[fseidl-bauradar]

Sounds like a good way

[rassilon]

@alexeyzimarev , public async Task ThrowExceptionIn_InterceptBeforeRequest_ShouldBeCatchableInTest() {
and:
public async Task ThrowExceptionIn_InterceptAfterRequest_ShouldBeCatchableInTest() {
are both failing for me in my rebased redirection branch. Do these fail for you as well?

EDIT: I think this was due to my question I asked in the follow redirect PR. If after request is called inside the redirection loop then the generated exception gets swallowed by exception -> response translation and throw error on failed request option is off for these tests.