feat: add raw_args kwarg to create_from_blueprint

[charles-cooper]

What I did

How I did it

How to verify it

@external
def foo(addr: address, argdata: Bytes[1024]) -> address:
    return create_from_blueprint(addr, argdata, raw_args=True)

Commit message

this commit adds a `raw_args` kwarg to `create_from_blueprint`, allowing
the user to append arbitrary data to the initcode after extcodecopy
(instead of ABI encoding the provided varargs). this is important for
a variety of use cases:

- generic create (where the initcode args cannot be specialized at
  compile time)
- custom arg decoders in the initcode (which may for instance be written
  in assembly)
- other use cases for arbitrary auxdata which haven't been thought of
  yet :)

Description for the changelog

Cute Animal Picture

[banteg]

example where it's useful

# @version 0.3.4
event Built:
    user: indexed(address)
    blueprint: indexed(address)
    instance: indexed(address)
    args: Bytes[1024]


@external
def build(blueprint: address, args: Bytes[1024]) -> address:
    instance: address = create_from_blueprint(blueprint, args, raw_args=True)
    log Built(msg.sender, blueprint, instance, args)
    return instance

[codecov-commenter]

Codecov Report

Merging #2996 (81fc6d3) into master (f31f0ec) will decrease coverage by 0.01%.
The diff coverage is 81.81%.

@@            Coverage Diff             @@
##           master    #2996      +/-   ##
==========================================
- Coverage   88.29%   88.28%   -0.02%     
==========================================
  Files          97       97              
  Lines       10919    10925       +6     
  Branches     2583     2585       +2     
==========================================
+ Hits         9641     9645       +4     
- Misses        830      831       +1     
- Partials      448      449       +1     

Impacted Files	Coverage Δ
vyper/builtin_functions/functions.py	90.28% <81.81%> (-0.12%)	⬇️

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