Add k6 tests for FT complex functions

[bilyana-gospodinova]

Add a complex k6 test for a Fungible token lifecycle

The test should include

1. Token creation
2. Token association
3. Grant KYC
4. Token Transfer
5. Freeze / Unfreze
6. Pause / Unpause

Solution

Add k6 tests for the missing scenarios.

Alternatives

No response

[steven-sheehy]

Not sure we need to work on this one for next sprint. Probably better use of time to get the existing tests to be performant first.