[cmake] Change test subdirectory path

Change output path

[config] Re-add HLT config path for orbit output-based pipelines

[config] Clean up

[config,test] Add config unit tests

[test] Interrupt operation manually after timeout

Overrides operator<< for reporting

[ci,test] Add template config file

Create new target library WZDMA for wzdma.c/h with different set of compilation options than core library SCDAQ. Namely, compile in C99 mode to silence C90 mode warnings enabled by default.

[lint] Add explicit casts

[lint] Explicit casting of integers

In bitshift context, prevents undefined behavior with signed integers

[lint] Make read-only arrays const

[lint] Avoid string copies by const referencing

[lint] Make value computed by constants `constexpr`

Adds assertion, annotates method declarations, rewrites some logic, renames local variable shadowing member variable, and fix general typos
[lint] Replace NULL with nullptr
[lint] Avoid initialization in lambda expression capture

Default-initialize members, const-ify methods, reorder initializations where needed

Except for header dependency of C source file, all instances of stdint.h are replaced by cstdint.

Rename source directory, change build location, ensure cmake present

Place wzdma and CMSSW files under own subdirectories and move external libraries to a dedicated root-level directory.
Adapt Makefile in src directory accordingly.