Improve validation in loading

## replace memcpy into binary reader
replace mecpy into binary reader to make easy to check

## added min max
specify min max into binary reader to check whether value is valid.

this is implementing commit
https://github.com/effekseer/Effekseer/commit/f81e40212e07f6490fdac938bd0f0155dc7b17af

## add a mode where validation is disabled
to upgrade loading speed, added validation mode (on or off)

Review the referenced commit and locate the binary reader and its loading entry points; the issue does not name specific files or tests. Confirm the intended scope for replacing memcpy, adding min/max validation, and providing an on/off validation mode, then verify loading behavior and speed in both modes.

Written by the indexing model from the issue text.