* expose openNumericKeysDict, requires a write/read argument.

replaces all OpenNumericIndex calls.

* fork gc -initialiize index pointer only once

rename createIndex to createPopulateTermsInvIndex

add function to tests/index_utils

generalize FGCTest suit
add inheriting suite for tags

some cosmetics in cpp_range

ExtTest.testDynamicLoading: log when assert fails (the test halts upon assertion and the log will be nerver pronted)

in IndexTest and QueryTest use IndexSpec_RemoveFromGlobals instead of StrongRef_Release to ensure the spec is properly cleaned
otherwise some structs like the global prefix trie nodes, potentially accessed by following tests, might hold a copy of the spec refrence that was already released and cuase a crash.

* add inverted index total size to the numeric tree root

update in gc and in addition
add cpp_range test and cpp_forkgc test

* FIX:
decrease gc->stats.totalCollected by bytesAdded to not count bytes added by us

remove reseting currNode->range->invertedIndexSize in applyNumIdx called upon each node recieved from the child process
instead, we will count the memory released when trimming the empty leaves

call IndexSpec_TotalMemUsage from RediSearch_MemUsage instead of code duplication

add IndexSpec_collect_numeric_overhead that counts the memory of NumericRangeTree in a given  spec
call this function to add it to IndexSpec_TotalMemUsage

update LLApiTest testInfo* accordingly

* fixes

* fix new cpp forkgc test

* fix unsafe read

* fix status check

* numeric tree debug commands - if tree was not intizlied yet, reply as if it was an empty tree

* fix reset range->invertedIndexSize in applyNumIdx when index is empty.
it will be counted when the range is deleted

* add initial inverted index size if numeric to test

don't intialize the numeric inverted index in the child if it's empty

* fix gc warning

* little fix

* changes rt->invertedIndexSize to rt->invertedIndexesSize

fix IndexSpec_collect_numeric_overhead and add test

fix sending NULL to FGC_sendFixed

* CalculateNumericInvertedIndexMemory fix identation and break when failing

* rename openNumericKeysDict variable write to initialize and change type to bool

* change OPEN_INDEX_READ to DONT_CREATE_INDEX
and OPEN_INDEX_WRITE to CREATE_INDEX

add coments to tests

* use Likst instead of list to support older python versopns

* remove type from function args

* fix

---------

Co-authored-by: GuyAv46 <[email protected]>
(cherry picked from commit 357d356)