[MEX-376] migrate positions transactions

[claudiulataretu]

Reasoning

• users will have to initialize the total farm position with all their positions on a farm;
• users will perform a migration by claiming rewards with all the positions;

Proposed Changes

• added method to get farm token migration nonce from smart contract;
• added method to generate claim rewards transactions for all farm positions with lower nonce than migration nonce;

How to test

query MigrateToFarmPosition {
	migrateTotalFarmPositionsProxy(
		proxyAddress: <proxy_address>
	) {
            data
        }
}

query MigrateToFarmPosition {
	migrateTotalFarmPositions(
		farmAddress: <farm_address>
	) {
		data
	}
}

• queries should return transactions if user had positions in farm prior to upgrade

[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (4dffeae) 56.09% compared to head (0667e7c) 56.16%.
Report is 3 commits behind head on feat/farm-multiple-positions-boost.

❗ Current head 0667e7c differs from pull request most recent head 7102216. Consider uploading reports for the commit 7102216 to get more accurate results

Additional details and impacted files

@@                          Coverage Diff                           @@
##           feat/farm-multiple-positions-boost    #1208      +/-   ##
======================================================================
+ Coverage                               56.09%   56.16%   +0.07%     
======================================================================
  Files                                     235      237       +2     
  Lines                                    7835     7987     +152     
  Branches                                  520      541      +21     
======================================================================
+ Hits                                     4395     4486      +91     
- Misses                                   2997     3039      +42     
- Partials                                  443      462      +19     

Flag	Coverage Δ
unittests	56.16% <69.38%> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/modules/farm/mocks/farm.constants.ts	100.00% <ø> (ø)
src/modules/farm/mocks/farm.v2.abi.service.mock.ts	33.33% <100.00%> (+4.76%)	⬆️
...es/multiversx-communication/mx.api.service.mock.ts	83.33% <100.00%> (+1.51%)	⬆️
src/modules/proxy/mocks/proxy.abi.service.mock.ts	78.57% <66.66%> (+7.14%)	⬆️
...es/farm/v2/services/farm.v2.transaction.service.ts	68.75% <72.72%> (ø)
...ices/proxy-farm/proxy.farm.transactions.service.ts	46.87% <84.00%> (ø)
...rc/modules/farm/v2/services/farm.v2.abi.service.ts	25.49% <12.50%> (-0.56%)	⬇️

... and 7 files with indirect coverage changes

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