Outsourced generic insert testing code into function
Added ht test: big table, few values
Added ht test: small table, much values
Added ht test: big table, much values
Moved from 4 tests to one loop test with parameter table
Moved static helper back to actual test function
Added test case for adding to suite
Add: More test parameters
Fix: Name of loop test: We insert distinct values
Removed inserting params for inserting many values
Added ht_find_multiple test
Added ht_del