Let --builtin-path point to directory containing builtin modules to load as builtins.
Implement completion message and offer symbols in scope plus available builtins that match the current expression.
analysis: move loader to analyzer/builtins
analysis: start of builtins_test
analysis: initial implementation of LoadBuiltinModule
analysis: track functions as document symbols also
analysis: load builtin modules from subdirectories
analysis: first stab at implementing completion
analysis: use symbols in scope to position for completion
Let --builtin-path point to directory containing builtin modules to load as builtins. Implement completion message and offer symbols in scope plus available builtins that match the current expression.