Support return Long for int64 type

[shanghaikid]

In this pr

• I add a loaderOptions in ClientConfig, it controls protobuf.js how to parse int64

The default loader options is

const LOADER_OPTIONS = {
  keepCase: true, // preserve field names
  longs: String, // convert int64 fields to strings
  enums: String, // convert enum fields to strings
  defaults: true, // populate default values
  oneofs: true, // populate oneof fields
};

If user want the sdk to return real int64 data, user can change it to this:

const longClient = new MilvusClient({
  address: IP,
  loaderOptions: { longs: Function },
});

• I updated the test functions to support int64 verification
• I upgrade grpc packages
• I add the long.js package as dev dependency.

[sre-ci-robot]

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[shanghaikid]

this related to #279 226

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b2d913b) 96.62% compared to head (cd092ba) 96.63%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #279   +/-   ##
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  Coverage   96.62%   96.63%           
=======================================
  Files          36       36           
  Lines        1865     1870    +5     
  Branches      461      461           
=======================================
+ Hits         1802     1807    +5     
  Misses         58       58           
  Partials        5        5           

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