feat(multichain): add block explorer format URLs

[ccharly]

Description

The current URLs that we use for non-EVM networks does not scale well. The address will not always be appended at the end of the URL.

Instead, we now use "sort-of" format strings to be able to place the address wherever we want on the URL.

Also, since we're going to use block explorers to also link transactions, we now use an object that holds multiple format URL instead of just having a single one, see:

• feat: SOL-80 transaction details #29323

Related issues

N/A

Manual testing steps

TODO

Screenshots/Recordings

Before

After

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Pre-merge reviewer checklist

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[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.

[danroc]

"Format" vs "Template"?

[metamaskbot]

Builds ready [67e8cd8]

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

Page Load Metrics (1761 ± 80 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1550	2258	1763	168	81
		domContentLoaded	1512	2222	1723	165	79
		load	1544	2243	1761	167	80
		domInteractive	22	131	44	29	14
		backgroundConnect	9	138	43	33	16
		firstReactRender	16	78	40	24	11
		getState	4	66	17	15	7
		initialActions	0	44	2	10	5
		loadScripts	1084	1683	1265	140	67
		setupStore	7	54	14	12	6
		uiStartup	1791	2541	2015	185	89

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

• background: 0 Bytes (0.00%)
• ui: 642 Bytes (0.01%)
• common: 601 Bytes (0.01%)