Feat: Integrate snap background events

[hmalik88]

Description

Write a short description of the changes included in this pull request, also include relevant motivation and context. Have in mind the following questions:

1. What is the reason for the change? New background events feature.
2. What is the improvement/solution? Added code to integrate the new feature.

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbot]

Builds ready [a0913f0]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1501 ± 52 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1360	1776	1507	107	51
		domContentLoaded	1320	1760	1482	108	52
		load	1361	1773	1501	108	52
		domInteractive	21	75	34	17	8
		backgroundConnect	8	60	21	16	8
		firstReactRender	15	97	43	33	16
		getState	5	55	18	17	8
		initialActions	0	1	0	0	0
		loadScripts	959	1328	1098	92	44
		setupStore	6	64	10	13	6
		uiStartup	1591	2117	1795	158	76

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 411 Bytes (0.01%)
• ui: 203 Bytes (0.00%)
• common: 0 Bytes (0.00%)