get Parachain balances, refactor getBalance and getDecimals

[Rihyx]

Description

Please explain the changes this PR addresses here.

Checklist

• If this requires a documentation change, I have created a PR in moonbeam-docs repository.
• If this requires it, I have updated the Readme
• If necessary, I have updated the examples
• I have verified if I need to create/update unit tests
• I have verified if I need to create/update acceptance tests
• If necessary, I have run acceptance tests on this branch in CI

[changeset-bot]

🦋 Changeset detected

Latest commit: 4084c95

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@moonbeam-network/xcm-builder	Minor
@moonbeam-network/xcm-config	Minor
@moonbeam-network/xcm-types	Minor
@moonbeam-network/xcm-sdk	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/@changesets/[email protected]	Transitive: environment, filesystem, network	+4	169 kB	changesets-release-bot
npm/@polkadot/[email protected]	Transitive: network	+30	55.6 MB	polkadotjs
npm/@polkadot/[email protected]	Transitive: network	+35	55.7 MB	polkadotjs
npm/@polkadot/[email protected]	None	+6	4.9 MB	polkadotjs
npm/@types/[email protected]	Transitive: environment, filesystem	+32	3.44 MB	types
npm/@typescript-eslint/[email protected]	Transitive: environment, filesystem	+31	7.12 MB	jameshenry
npm/@typescript-eslint/[email protected]	Transitive: environment, filesystem	+24	2.33 MB	jameshenry
npm/[email protected]	environment, filesystem, network, shell	+8	660 MB	robobun
npm/[email protected]	Transitive: environment, filesystem, unsafe	+19	902 kB	jounqin
npm/[email protected]	filesystem Transitive: environment	+28	3.38 MB	simenb
npm/[email protected]	network	+6	17.9 MB	ricmoo
npm/[email protected]	Transitive: environment, filesystem, shell	+11	1.65 MB	isaacs

🚮 Removed packages: npm/@changesets/[email protected], npm/@polkadot/[email protected], npm/@polkadot/[email protected], npm/@polkadot/[email protected], npm/@types/[email protected], npm/@typescript-eslint/[email protected], npm/@typescript-eslint/[email protected], npm/[email protected], npm/[email protected], npm/[email protected], npm/[email protected]

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