Fix #14113 (Slow analysis: microchip xc16 code)

[glankk]

Improves check times for sources with many conditionally includes files by implementing lazy loading of headers. Lazy loading is only implemented for single-config checks because cppcheck currently needs to open all possibly included headers in order to discover configs automatically. Lazy loading for automatic configurations is possible by discovering new configurations as files are loaded, and it's something I think should be implemented in the future. I've done preliminary tests showing that it significantly speeds up check times when using -f, but there are some complications that need to be figured out and it's outside the scope of this PR.

Some changes have been made to Preprocessor; since preprocessing has to be done per-file as they are included, many functions have been changed or overloaded to act on a specific file instead of all previously loaded files. Some dumps have been changed to be completed after checking is done, when the full list of included files is known.

A test has been added to test/cli/performance_test.py.

Benchmarks

Test file:

$ cat pic1.c
#include <xc.h>

Before:

$ cppcheck -I"C:\Program Files\Microchip\xc16\v2.10\support\generic\h" -I"C:\Program Files\Microchip\xc16\v2.10\support\dsPIC33E\h" -D __dsPIC33EP128GP504__ pic1.c --showtime=file-total
Checking pic1.c ...
Checking pic1.c: __dsPIC33EP128GP504__=1...
Check time: pic1.c: 2m 22.472s

After:

$ cppcheck -I"C:\Program Files\Microchip\xc16\v2.10\support\generic\h" -I"C:\Program Files\Microchip\xc16\v2.10\support\dsPIC33E\h" -D __dsPIC33EP128GP504__ pic1.c --showtime=file-total
Checking pic1.c ...
Checking pic1.c: __dsPIC33EP128GP504__=1...
Check time: pic1.c: 1.011s

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud