feat(multichain): add BalancesController

[danroc]

Description

This PR adds the Balances Controller that retrieves non EVM balances of accounts.

Related issues

Fixes https://github.com/MetaMask/accounts-planning/issues/452

Manual testing steps

This tests requires a btc account for the balances to appear in the state

1. Start the extension
2. Create a non evm account
3. Wait for interval to pass and see the balances in the state state.metamask.balances

Screenshots/Recordings

Not Applicable

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.

[codecov]

Codecov Report

Attention: Patch coverage is 92.98246% with 4 lines in your changes missing coverage. Please review.

Project coverage is 64.99%. Comparing base (f327c95) to head (44f3878).
Report is 14 commits behind head on develop.

Files	Patch %	Lines
app/scripts/lib/accounts/Poller.ts	85.71%	2 Missing ⚠️
app/scripts/lib/accounts/BalancesController.ts	97.14%	1 Missing ⚠️
app/scripts/metamask-controller.js	87.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25257      +/-   ##
===========================================
+ Coverage    64.92%   64.99%   +0.07%     
===========================================
  Files         1390     1392       +2     
  Lines        55157    55182      +25     
  Branches     14493    14491       -2     
===========================================
+ Hits         35806    35862      +56     
+ Misses       19351    19320      -31     

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[metamaskbot]

Builds ready [ddfc3f5]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

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

Page Load Metrics (228 ± 253 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	67	111	86	13	6
		domContentLoaded	9	23	12	3	2
		load	41	1818	228	527	253
		domInteractive	9	23	12	3	2

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

• background: 4.62 KiB (0.13%)
• ui: 0 Bytes (0.00%)
• common: 43 Bytes (0.00%)

[metamaskbot]

Builds ready [14ba8c6]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

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

Page Load Metrics (48 ± 3 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	65	98	79	8	4
		domContentLoaded	10	19	11	2	1
		load	41	66	48	7	3
		domInteractive	10	19	11	2	1

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

• background: 4.69 KiB (0.14%)
• ui: 0 Bytes (0.00%)
• common: 43 Bytes (0.00%)

[ccharly]

As discussed together, we will to adapt the subscription logic in setupMultichainDataAndSubscriptions in another PR (for both the RatesController and BalancesController)

Other than that, LGTM!

[metamaskbot]

Builds ready [44f3878]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

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

Page Load Metrics (41 ± 1 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	62	143	79	20	10
		domContentLoaded	7	12	9	1	0
		load	37	47	41	2	1
		domInteractive	7	12	9	1	0

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

• background: 4.7 KiB (0.14%)
• ui: 0 Bytes (0.00%)
• common: 43 Bytes (0.00%)