[SERVICES-1909] fix swap errors

[claudiulataretu]

Reasoning

• swap query didn't return user friendly errors

Proposed Changes

• added error handling for swap query

How to test

query Swap {
	swap(
		tokenInID: <tokenID>,
		tokenOutID: <tokenID>,
		tolerance: 0.01,
		amountOut: <amount>
	) {
		swapType
		amountIn
		amountOut
		fees
		pricesImpact
		tokenInExchangeRate
		tokenOutExchangeRate
	}
}

• query should return error if no route found for multi swap
• query should return error on swap output type if amount is grater than reserves

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (e01d7b4) 56.21% compared to head (0a1a0c9) 56.25%.
Report is 1 commits behind head on development.

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1218      +/-   ##
===============================================
+ Coverage        56.21%   56.25%   +0.04%     
===============================================
  Files              235      235              
  Lines             7838     7844       +6     
  Branches           519      522       +3     
===============================================
+ Hits              4406     4413       +7     
+ Misses            2989     2986       -3     
- Partials           443      445       +2     

Flag	Coverage Δ
unittests	56.25% <45.45%> (+0.04%)	⬆️

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

Files	Coverage Δ
...uto-router/services/auto-router.compute.service.ts	74.32% <50.00%> (-2.07%)	⬇️
...odules/auto-router/services/auto-router.service.ts	67.93% <40.00%> (-1.36%)	⬇️

... and 1 file with indirect coverage changes

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