feat: sharded FT contracts with deterministic addresses

[mitinarseny]

Reference implementation of Sharded Fungible Token contracts

Originally discussed at: near/NEPs#607 (comment)
To be included in: NEP-636: Sharded Fungible Token standard

[ilblackdragon]

Exciting progress here.

Given this is introducing new token standard - we should probably have the standard for that in NEP as well.
As part of that standard one request from my side is to think through how we can have private balances and transactions in the new standard.

Onchain privacy is becoming more important, especially with more adoption of crypto as payment rails. Given this new standard will require effectively full ecosystem overhaul - wallets, tooling, exchanges, it's a good time to think through all of the changes we would like to make.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 53 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.61%. Comparing base (de5c436) to head (efb2158).
⚠️ Report is 72 commits behind head on master.

Files with missing lines	Patch %	Lines
...standards/src/sharded_fungible_token/minter/mod.rs	0.00%	24 Missing ⚠️
...standards/src/sharded_fungible_token/wallet/mod.rs	0.00%	22 Missing ⚠️
...act-standards/src/sharded_fungible_token/events.rs	0.00%	5 Missing ⚠️
...t-standards/src/sharded_fungible_token/receiver.rs	0.00%	1 Missing ⚠️
...ards/src/sharded_fungible_token/wallet/governed.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1376      +/-   ##
==========================================
+ Coverage   80.52%   80.61%   +0.08%     
==========================================
  Files         107      114       +7     
  Lines       15591    16955    +1364     
==========================================
+ Hits        12555    13668    +1113     
- Misses       3036     3287     +251     

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