Add initial support for events on CPU & CUDA

[PearCoding]

This PR adds event support to AnyDSL runtime.
Currently, only CPU & Cuda devices are supported. Support can be queried via device_check_feature_support and "event".
Might add HSA support in the future.
The new runtime c functions are:

anydsl_event_t anydsl_create_event(int32_t);
void anydsl_destroy_event(int32_t, anydsl_event_t);
void anydsl_record_event(int32_t, anydsl_event_t);
bool anydsl_check_event(int32_t, anydsl_event_t);
uint64_t anydsl_query_us_event(int32_t, anydsl_event_t, anydsl_event_t);
void anydsl_sync_event(int32_t, anydsl_event_t);

Similar interface added to Artic and Impala.
Tested on Rodent (Artic).

Note: The 'us' is the official short notation for micro seconds

[PearCoding]

OpenCL support might be feasible with clGetEventProfilingInfo and other functions

[PearCoding]

For HSA (AMD) signals can be used. But we have bookkeep some lists to have the same approach as the CUDA events, most likely.