Show source location in error messages of deferred json

[Qrox]

Summary

SUMMARY: Infrastructure "Show source location in error messages of deferred json objects"

Purpose of change

Source location did not show correctly for deferred json objects. This PR fixes it.

Describe the solution

1. Store the data file path and stream offset instead of the JsonObject string, so the deferred json can be loaded using the actual path and display the correct source location.
2. Use lru_cache to load data files of deferred json so loading performance does not degrade.

Testing

Tested on top of #46337.

Before, without json errors

$ time build/build-tiles/tests/cata_test-tiles.exe --mods="$mods" '~*' >config/test.log 2>&1

real    0m25.374s
user    0m0.000s
sys     0m0.015s

Before, with json errors

$ time build/build-tiles/tests/cata_test-tiles.exe --mods="$mods" '~*' >config/test.log 2>&1

real    0m27.284s
user    0m0.000s
sys     0m0.031s

Error message example

Json error: <unknown source file>:14:10: format: rows: row 11 column 1: 'H' has no terrain, furniture, or other definition

"##=<<            |d d=##",
"##=----------    ----=##",
"H
 ^
  H=b  TTTT          b=##",
"HH= a               nw##",
"##w         ----    nw##",

After, without json errors

$ time build/build-tiles/tests/cata_test-tiles.exe --mods="$mods" '~*' >config/test.log 2>&1

real    0m25.466s
user    0m0.000s
sys     0m0.031s

After, with json errors

$ time build/build-tiles/tests/cata_test-tiles.exe --mods="$mods" '~*' >config/test.log 2>&1

real    0m27.989s
user    0m0.000s
sys     0m0.015s

Error message example

Json error: data/mods//More_Locations/multistory_houses/2story_houses/2storyA_first_03.json:20:10: format: rows: row 11 column 1: 'H' has no terrain, furniture, or other definition

"##=<<            |d d=##",
"##=----------    ----=##",
"H
 ^
  H=b  TTTT          b=##",
"HH= a               nw##",
"##w         ----    nw##",