feat(ckb-indexer): integrate merged rpc

[PainterPuppets]

Description

• update @ckb-lumos/ckb-indexer to support merged indexer

Resolved: #416

This is a no breaking change PR

With the merged indexer, we no longer need to depend on a separate ckb-indexer

import { Indexer } from '@ckb-lumos/lumos';

// before
// const indexer = new Indexer(
//   "https://testnet.ckb.dev/indexer", 
//   "https://testnet.ckb.dev/rpc",
// );

// after
const indexer = new Indexer("https://testnet.ckb.dev/rpc");

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactor (non-breaking change)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation or Website
• Example
• Other

How Has This Been Tested?

• pass e2e test

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules -->

[vercel]

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Name	Status	Preview	Updated
lumos-website	✅ Ready (Inspect)	Visit Preview	Oct 14, 2022 at 8:13AM (UTC)

[codecov]

Codecov Report

Merging #445 (1ce2fe3) into develop (5f1a8c4) will increase coverage by 0.02%.
The diff coverage is 83.33%.

@@             Coverage Diff             @@
##           develop     #445      +/-   ##
===========================================
+ Coverage    82.55%   82.58%   +0.02%     
===========================================
  Files           98       98              
  Lines        20198    20227      +29     
  Branches      1934     1935       +1     
===========================================
+ Hits         16675    16705      +30     
+ Misses        3469     3468       -1     
  Partials        54       54              

Impacted Files	Coverage Δ
packages/ckb-indexer/src/indexer.ts	29.72% <68.18%> (+2.23%)	⬆️
packages/ckb-indexer/src/type.ts	100.00% <100.00%> (ø)

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[homura]

LGTM