Added typescript type definitions for typescript and fixes Model.distinct() (close #52)

[xrip]

Those little fixes would be very useful for community.
I've using chachegoose with typescript for a long time and want to share my definitions for community. Also, here is some fix for .distinct operation which not needs an hydrate it works like .lean

[riderx]

Need it :)

[Akhil-bridge]

@xrip It showing me this error after taken your pull request
TS2551: Property 'cache' does not exist on type 'DocumentQuery<IUser, IUser, {}>'. Did you mean 'catch'

And see this error

[xrip]

@Akhil-bridge Did you extends global mongoose object with cache goose? Like

import mongoose from 'mongoose';
import cachegoose from 'cachegoose';
import redis from '../redis';

const mongo = function mongo(config: string): mongoose.Connection {
    const options = {
        useUnifiedTopology: true,
        useNewUrlParser: true,
        useCreateIndex: true,
        useFindAndModify: false,
    };

    mongoose.connect(config, options);

    cachegoose(mongoose, redis);

    return mongoose.connection;
};

export default mongo(process.env.MONGODB as string);

Looks like your IDE resolves not extended type definition by cachegoose

[Akhil-bridge]

Thanks xrip
This worked..!!
import * as cachegoose from 'cachegoose';
Changed according to the below solution
https://stackoverflow.com/questions/56238356/understanding-esmoduleinterop-in-tsconfig-file

[Akhil-bridge]

Could you please merge this @boblauer ?

[Akhil-bridge]

@xrip do you know how to keep node_modules updated with the changes in the forked repo? I don't think these changes been merged soon.

[xrip]

You can add package directly from my github repo e.g
'''
npm install https://github.com/xrip/cachegoose

[devcshort]

@xrip I seem to get a bunch of build errors when trying to use your repo.

node_modules/cachegoose/index.d.ts:21:2 - error TS2666: Exports and export assignments are not permitted in module augmentations.

21  export = cachegoose;
    ~~~~~~

node_modules/cachegoose/index.d.ts:29:9 - error TS2371: A parameter initializer is only allowed in a function or constructor implementation. 

29      cache(ttl: number = 60, customKey: string = ''): this
              ~~~~~~~~~~~~~~~~

node_modules/cachegoose/index.d.ts:29:27 - error TS2371: A parameter initializer is only allowed in a function or constructor implementation.

29      cache(ttl: number = 60, customKey: string = ''): this
                                ~~~~~~~~~~~~~~~~~~~~~~

node_modules/cachegoose/index.d.ts:30:9 - error TS2371: A parameter initializer is only allowed in a function or constructor implementation. 

30      cache(customKey: string = ''): this
              ~~~~~~~~~~~~~~~~~~~~~~

node_modules/cachegoose/index.d.ts:31:9 - error TS2371: A parameter initializer is only allowed in a function or constructor implementation.

31      cache(ttl: number = 60): this