build the bindings dynamically

[fneddy]

i tried to generate the bindings dynamically directly from the lldb headers but they would not work. I assume you hit the same as you rewrote the lldb API to wrap all returned objects and move them to the heap.

i spend some time and found the reason and a workaround.

[waywardmonkeys]

Are the bindings generated this way actually compatible with what we have before? What disadvantages are there?

[fneddy]

it definitely breaks lldb.rs.

here some reasoning:

pro:

• instantly complete c++ lldb api is available
• instant update on lldb api changes by recompiling, no need to rewrite lldb-sys
• no bugs in lldb-sys. at least no bugs made by developers, through there might be many bugs in bindgen.

con:

• need to change a huge pile of code in lldb.rs
• might result in api changes for lldb.rs itself

for now my honest opinion is to not seriously attempt to merge this PR. I like lldb and always wanted to play with it. maybe i get some time to play with lldb.rs and can come back with more facts. until then I would treat this more like a proof of concept.