[VEN-1909]: Add VTreasuryV8

[GitGuru7]

Description

Adds new VTreasuryV8 contract in 0.8.20 solidity version with deployment script

Resolves VEN-1909

Checklist

• I have updated the documentation to account for the changes in the code.
• If I added new functionality, I added tests covering it.
• If I fixed a bug, I added a test preventing this bug from silently reappearing again.
• My contribution follows Venus contribution guidelines.

[github-actions]

Package	Line Rate	Branch Rate	Health
Admin	88%	41%	✔
Comptroller	100%	90%	✔
Comptroller.Diamond	95%	59%	✔
Comptroller.Diamond.facets	78%	65%	➖
Comptroller.Diamond.interfaces	100%	100%	✔
DelegateBorrowers	100%	86%	✔
Governance	0%	0%	❌
InterestRateModels	47%	67%	❌
Lens	44%	37%	❌
Liquidator	98%	80%	✔
Oracle	100%	100%	✔
PegStability	88%	84%	✔
Swap	90%	57%	✔
Swap.interfaces	100%	100%	✔
Swap.lib	81%	53%	✔
Tokens	100%	100%	✔
Tokens.VAI	71%	46%	➖
Tokens.VRT	20%	9%	❌
Tokens.VTokens	55%	35%	➖
Tokens.XVS	19%	8%	❌
Utils	48%	29%	❌
VRTVault	49%	36%	❌
Vault	50%	45%	➖
XVSVault	62%	49%	➖
Summary	63% (2349 / 3757)	44% (901 / 2048)	➖