makefile support for install bosatsu platform

[johnynek]

the idea here is a half step to the compiler setting up all the c compile time dependencies in the project repo.

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.

Project coverage is 89.10%. Comparing base (04a0e87) to head (f6a27c2).
Report is 141 commits behind head on main.

Files with missing lines	Patch %	Lines
...e/src/main/scala/org/bykn/bosatsu/MainModule.scala	57.14%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1333      +/-   ##
==========================================
- Coverage   91.32%   89.10%   -2.22%     
==========================================
  Files          96      109      +13     
  Lines       11846    13574    +1728     
  Branches     2675     3157     +482     
==========================================
+ Hits        10818    12095    +1277     
- Misses       1028     1479     +451     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.