Add Contract.call_function in SC language

[Neylix]

Description

Add a new function in Contract module in SC library to allow user to call a public function from a contract

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Unit test
Manuel testing with those contract

@version 1
export fun add(x, y) do
  x + y
end

@version 1
condition transaction: []
actions triggered_by: transaction do
  address = 0x0000c32fd6b33c9ff557ad8826f516c1c81d0242524be10891a009b77c50e252bcc5
  res = Contract.call_function(address, "add", [1, 2])
  Contract.set_content res
end

triggered second contract and result transaction contained 3 in content

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules