System Test: Add coverage for CLI conctract ts bindings

[sreuland]

What problem does your feature solve?

no automated test coverage to exercise the ts generated from soroban contract bindings typescript --wasm ...used

What would you like to see?

a test that uses soroban contract bindings typescript --wasm ... to generate ts binding from examples/hello-world and then invoke the hello world contract fn using the ts and verify invocation results.

What alternatives are there?

generate cli ts bindings and invoke them manually or wait for soroban-examples-dapp to be updated to same version of cli as it will generate bindings as part of init.

[sreuland]

this test coverage has been moved to soroban-tools/996