[DPG] TRD: Changes for TRD-PID study

[KangkanGoswami]

This change contains the files for the TRD PID Study.

[github-actions]

O2 linter results: ❌ 14 errors, ⚠️ 0 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/o2 for 565d449 at 2025-09-22 15:39:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:80:38: error: 'o2::aod::TRDsExtra' has not been declared
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:82:28: error: 'begin' was not declared in this scope
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:82:28: error: 'end' was not declared in this scope
/sw/slc9_x86-64/O2/daily-20250922-0000-local1/include/Framework/AnalysisTask.h:530:49: error: no matching function for call to 'o2::framework::{anonymous}::AnalysisDataProcessorBuilder::inputsFromArgs(void (TRDPIDStudy::*)(const TRDPIDStudy::Tracks&, const int&), const char [8], bool, std::vector<o2::framework::InputSpec>&, std::vector<ExpressionInfo>&)'
/sw/slc9_x86-64/O2/daily-20250922-0000-local1/include/Framework/AnalysisTask.h:596:50: error: no matching function for call to 'o2::framework::{anonymous}::AnalysisDataProcessorBuilder::cacheFromArgs(void (TRDPIDStudy::*)(const TRDPIDStudy::Tracks&, const int&), bool, o2::framework::Cache&, o2::framework::Cache&)'
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/o2 for c0377ad at 2025-12-18 10:43:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:80:38: error: 'o2::aod::TRDsExtra' has not been declared
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:82:28: error: 'begin' was not declared in this scope
/sw/SOURCES/O2Physics/13074-slc9_x86-64/0/DPG/Tasks/TRD/PIDStudy.cxx:82:28: error: 'end' was not declared in this scope
/sw/slc9_x86-64/O2/daily-20251218-0000-local1/include/Framework/AnalysisTask.h:530:49: error: no matching function for call to 'o2::framework::{anonymous}::AnalysisDataProcessorBuilder::inputsFromArgs(void (TRDPIDStudy::*)(const TRDPIDStudy::Tracks&, const int&), const char [8], bool, std::vector<o2::framework::InputSpec>&, std::vector<ExpressionInfo>&)'
/sw/slc9_x86-64/O2/daily-20251218-0000-local1/include/Framework/AnalysisTask.h:596:50: error: no matching function for call to 'o2::framework::{anonymous}::AnalysisDataProcessorBuilder::cacheFromArgs(void (TRDPIDStudy::*)(const TRDPIDStudy::Tracks&, const int&), bool, o2::framework::Cache&, o2::framework::Cache&)'
ninja: build stopped: subcommand failed.

Full log here.

[github-actions]

This PR has not been updated in the last 30 days. Is it still needed? Unless further action is taken, it will be closed in 5 days.