Build/npm ignore file (#936)

* build: add npm ignore file

build: exclude *.t.sol files from NPM package

* test: absolute paths in precompiles test

* build: remove .npmignore

build: add "!test/utils/*.t.sol" in package json files

* build: npm ignore file in test utils

---------

Co-authored-by: Paul Razvan Berg <prberg@proton.me>

test/utils/.npmignore

@@ -0,0 +1 @@
+*.t.sol

test/utils/Precompiles.t.sol

@@ -3,11 +3,11 @@ pragma solidity >=0.8.22 <0.9.0;
 
 import { LibString } from "solady/src/utils/LibString.sol";
 
-import { Precompiles } from "../../precompiles/Precompiles.sol";
-import { ISablierV2LockupDynamic } from "../../src/interfaces/ISablierV2LockupDynamic.sol";
-import { ISablierV2LockupLinear } from "../../src/interfaces/ISablierV2LockupLinear.sol";
-import { ISablierV2LockupTranched } from "../../src/interfaces/ISablierV2LockupTranched.sol";
-import { ISablierV2NFTDescriptor } from "../../src/interfaces/ISablierV2NFTDescriptor.sol";
+import { Precompiles } from "precompiles/Precompiles.sol";
+import { ISablierV2LockupDynamic } from "src/interfaces/ISablierV2LockupDynamic.sol";
+import { ISablierV2LockupLinear } from "src/interfaces/ISablierV2LockupLinear.sol";
+import { ISablierV2LockupTranched } from "src/interfaces/ISablierV2LockupTranched.sol";
+import { ISablierV2NFTDescriptor } from "src/interfaces/ISablierV2NFTDescriptor.sol";
 
 import { Base_Test } from "../Base.t.sol";