Tests/sdk features stage 2 (#11)

* tests: enhance tests for existing functions

* tests: add test cases for existing functions

* tests: add test cases for three new functions

* tests: Introduce mock for getFeeRate function

* tests: implement workaround for Jest BigInt assertion issue

* tests: wip test cases getRoute, getAmountTo, runSwap

* tests: mocked functions runSwap, getLatestPrices

* temp commit

* tests: mocked functions getBalances, fetchSwappableCurrency

* tests: add additional tests for error scenarios

* tests: add more coverage to runSwap SDK method

* temp commit

* temp commit

* sync merge

* code linted + documentation update

* tests: SDK getWayPoints method

* tests: add lint fix command

* tests: add getFeeRate with custom route

* test: add external error tests

* fix: minor changes

* conflicts resolved

---------

Co-authored-by: ignacio.pena@coinfabrik.com <ignacio.pena@coinfabrik.com>
Co-authored-by: simsbluebox <simsbluebox@gmail.com>
Co-authored-by: david weil <david.weil@endlesstruction.com.ar>

package.json

@@ -15,7 +15,9 @@
     "build": "dts build",
     "prepare": "pnpm run build",
     "test": "dts test",
+    "test:coverage": "dts test --coverage",
     "lint": "dts lint",
+    "lint-fix": "dts lint --fix",
     "size": "size-limit",
     "gen:contract": "rm -rf src/generated/smartContract/* && tsx ./scripts/gen-contract.ts && prettier --write 'src/generated/smartContract'",
     "analyze": "size-limit --why",
@@ -62,6 +64,7 @@
     "ajv": "^8.16.0",
     "dts-cli": "^2.0.5",
     "esm": "^3.2.25",
+    "fetch-mock": "^10.0.7",
     "husky": "^8.0.3",
     "prettier": "^2.8.4",
     "size-limit": "^8.2.4",