ipi: remove normalize_coord

[njzjz]

(1) Remove normalize_coord and add a test to confirm it still works;
(2) Remove the include of SimulationRegion.h and the direct link to libdeepmd.so;
(3) Allow using a pre-compiled C library to build dp_ipi.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0e2304f) 75.27% compared to head (1c28f4d) 75.27%.

Additional details and impacted files

@@            Coverage Diff             @@
##            devel    #3257      +/-   ##
==========================================
- Coverage   75.27%   75.27%   -0.01%     
==========================================
  Files         373      373              
  Lines       33238    33224      -14     
  Branches     1608     1605       -3     
==========================================
- Hits        25020    25009      -11     
+ Misses       7345     7344       -1     
+ Partials      873      871       -2     

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