vmlogic: maintain memory by a Box

[nagisa]

This is a part of an effort to drop the lifetime from the VMLogic structure in order to make it more straightforward to have it live for a longer duration alongside the instance and not force our hand in pretty much "create-execute contract-drop" flow.

Part of #11319

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.

Project coverage is 71.48%. Comparing base (3e3137f) to head (5bfbe8a).

Files	Patch %	Lines
runtime/near-vm-runner/src/wasmer_runner.rs	0.00%	0 Missing and 2 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #11614 +/- ## ========================================== + Coverage 71.46% 71.48% +0.02% ========================================== Files 788 788 Lines 160854 160854 Branches 160854 160854 ========================================== + Hits 114947 114992 +45 + Misses 40887 40843 -44 + Partials 5020 5019 -1 ``` | [Flag](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | Coverage Δ | | |---|---|---| | [backward-compatibility](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.23% <0.00%> (ø)` | | | [db-migration](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.23% <0.00%> (ø)` | | | [genesis-check](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.35% <0.00%> (ø)` | | | [integration-tests](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `37.68% <64.28%> (-0.02%)` | :arrow_down: | | [linux](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `68.90% <85.71%> (+0.02%)` | :arrow_up: | | [linux-nightly](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `70.97% <85.71%> (+0.03%)` | :arrow_up: | | [macos](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `52.57% <100.00%> (+0.01%)` | :arrow_up: | | [pytests](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.59% <0.00%> (ø)` | | | [sanity-checks](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `1.38% <0.00%> (ø)` | | | [unittests](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `66.15% <85.71%> (+0.02%)` | :arrow_up: | | [upgradability](https://app.codecov.io/gh/near/nearcore/pull/11614/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near) | `0.28% <0.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=near#carryforward-flags-in-the-pull-request-comment) to find out more.

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