VAULT: Create Frozen Vaults

[coachchucksol]

A Frozen Vault, is just like a regular vault expect that the VRT that is minted is non-transferrable.

[codecov]

Codecov Report

Attention: Patch coverage is 5.23560% with 181 lines in your changes missing coverage. Please review.

Project coverage is 77.11%. Comparing base (406903e) to head (6d27dcf).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
vault_program/src/enqueue_withdrawal_frozen.rs	0.00%	72 Missing ⚠️
vault_program/src/mint_to_frozen.rs	0.00%	55 Missing ⚠️
vault_program/src/initialize_frozen_vault.rs	0.00%	24 Missing ⚠️
vault_program/src/lib.rs	4.34%	22 Missing ⚠️
vault_core/src/vault.rs	45.45%	6 Missing ⚠️
vault_program/src/mint_to.rs	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #186      +/-   ##
==========================================
- Coverage   78.79%   77.11%   -1.68%     
==========================================
  Files          89       92       +3     
  Lines        9232     9426     +194     
==========================================
- Hits         7274     7269       -5     
- Misses       1958     2157     +199     

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