Change file allocation in serialcmds to dynamic, Refractor js engine

[Tawank]

Proposed Changes

• Changed file allocation in serialcmds to dynamic
• Changed the limit of uploaded files in storage write and js run_from_buffer from 4kb to PSRAM limit
• Added destructor (finalizer) to gif object, so it could be removed propely by js garbage collector
• Fixed wifiScan() and wifiConnect() functions in js interpreter
• Changed js heap allocation to PSRAM

Types of Changes

Bugfix, New Feature

Verification

You can test it by using storage write and js run_from_buffer serialcmds.
Use wifiScan() function in js script

Linked Issues

• m5stickc plus 2 | Interpreter wifiScan() not work #698
• Weird Interpreter WiFi bugs #619
• BAD BLE causes screen glitch #702

User-Facing Change

- Fixed `wifiScan()` and `wifiConnect()` functions in js interpreter
- Fixed issues with ram in js interpreter

Further Comments

I futher refractored js engine so it will take less ram, it fixed problems with wifi and bluetooth.