build: V8 gyp files fixes

[refack]

• build: V8 toolchain.gypi dedup and comment 353fbf3
  Mostly semantically neutral refactoring, except for:
  https://github.com/nodejs/node/blob/353fbf34bd0c02d1004d4614c1520ded4bee5e99/tools/v8_gypfiles/toolchain.gypi#L1236
  which improves debugging experience for the "Debug" build.

• build: rename v8 PCH files and add new 1/2 bd299ff, 7cad083
  Improves V8 build time

• build: include PCH dir when using PCH f7387df
  Enables better compilation cache

• build: V8 workaround for MSVC 14.20 bug 758f57c
  Refs: developercommunity.visualstudio.com/content/problem/512352/compiler-doesnt-finish-142027508.html

• build: move tourqe and inspector codegen 5d211e8
  Refs: test: flakiness in building addons with make #22006
  A step toward reducing unnecessary recompilation.

/CC @nodejs/build-files @nodejs/platform-windows @nodejs/v8-update

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• documentation is changed or added
• commit message follows commit guidelines

[nodejs-github-bot]

Lite-CI: https://ci.nodejs.org/job/node-test-pull-request-lite-pipeline/3208

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/22296/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/22297/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/22311/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/22393/

[refack]

@nodejs/v8-update @nodejs/platform-windows @nodejs/build-files

This enables building with MSVS2019 (Currently blocked by a bug), and also improves build time by optimizing PCH usage, and better integration with clcache.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/22396/

[jasnell]

There's been no activity on this in over a year and there are conflicts. Closing. Can reopen if someone decides they want to pick it back up.