Refactor `RzTable` API and implementation

[XVilka]

• [ ] Provide the API to set a particular value given the names of the column and the row (overwrite if exists, adds if not)
• [ ] Provide the API to set a particular value given the indexes of the column and the row (overwrite if exists, adds if not)
• [ ] Provide the API to add a particular value given the names of the column and the row without overwriting
• [ ] Provide the API to add a particular value given the indexes of the column and the row without overwriting
• [ ] Provide the API to form a table/row/column given the HtPP/HtUP/HtUU as an argument
• [ ] Switch the internal storage of the RzTable from RzList to either vectors or hashtable (HtPP or something like that)
• [ ] Implement tests for these and other missing APIs

See these files:

• librz/util/table.c
• librz/include/rz_util/rz_table.h
• test/unit/test_table.c

[PeiweiHu]

Do the names/indexes mean one can pass multiple names/indexes?

So the function signature looks like: bool rz_table_set_val(RzTable *t, RZList *items, const char *arg, ...)

[XVilka]

Yes