refactor: plugin manager and execution as ts

[louis-jan]

Problem

• All plugin core modules are JS classes & placed in electron which is not correct
• Quite hard to update and import
• chore: plugin extension execution module should be a part of web / core rather than electron #402 web code base should not access / import from electron dir. e.g.

// Before
import * from "../../../../../electron/core/plugin-manager/execution/extension-manager"
// After
import * from "@plugin"

Solution

• Ported plugin core modules to TS
• Main plugin module placed in electron/plugin
• Renderer plugin module placed in web/plugin

fixes #402

action items:

• Plugin as exported class

[namchuai]

💯