[ADD] .gitignore

[kjaymiller]

We need a typescript focused .gitignore.

[homiecoder]

Gonna work on this one.

[homiecoder]

Thanks for clarification.
I have attached the .gitignore from Microsoft/Typescript repo below.

This seems really extensive. Are you aware if this being so extensive, may cause us issues later?

If not, please advise and I will re-submit the PR.

node_modules/
.node_modules/
built/*
tests/cases/rwc/*
tests/cases/test262/*
tests/cases/perf/*
!tests/cases/webharness/compilerToString.js
test-args.txt
~*.docx
\#*\#
.\#*
tests/baselines/local/*
tests/baselines/local.old/*
tests/services/baselines/local/*
tests/baselines/prototyping/local/*
tests/baselines/rwc/*
tests/baselines/test262/*
tests/baselines/reference/projectOutput/*
tests/baselines/local/projectOutput/*
tests/baselines/reference/testresults.tap
tests/services/baselines/prototyping/local/*
tests/services/browser/typescriptServices.js
src/harness/*.js
src/compiler/diagnosticInformationMap.generated.ts
src/compiler/diagnosticMessages.generated.json
src/parser/diagnosticInformationMap.generated.ts
src/parser/diagnosticMessages.generated.json
rwc-report.html
*.swp
build.json
*.actual
tests/webTestServer.js
tests/webTestServer.js.map
tests/webhost/*.d.ts
tests/webhost/webtsc.js
tests/cases/**/*.js
!tests/cases/docker/*.js/
tests/cases/**/*.js.map
*.config
scripts/eslint/built/
scripts/debug.bat
scripts/run.bat
scripts/**/*.js
scripts/**/*.js.map
coverage/
internal/
**/.DS_Store
.settings
**/.vs
**/.vscode/*
!**/.vscode/tasks.json
!**/.vscode/settings.template.json
!**/.vscode/launch.template.json
!**/.vscode/extensions.json
!tests/cases/projects/projectOption/**/node_modules
!tests/cases/projects/NodeModulesSearch/**/*
!tests/baselines/reference/project/nodeModules*/**/*
.idea
yarn.lock
yarn-error.log
.parallelperf.*
tests/cases/user/*/package-lock.json
tests/cases/user/*/node_modules/
tests/cases/user/*/**/*.js
tests/cases/user/*/**/*.js.map
tests/cases/user/*/**/*.d.ts
!tests/cases/user/zone.js/
!tests/cases/user/bignumber.js/
!tests/cases/user/discord.js/
tests/baselines/reference/dt
.failed-tests
TEST-results.xml
package-lock.json
tests/cases/user/npm/npm
tests/cases/user/TypeScript-React-Starter/TypeScript-React-Starter
tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
tests/cases/user/TypeScript-React-Native-Starter/TypeScript-React-Native-Starter
tests/cases/user/TypeScript-Vue-Starter/TypeScript-Vue-Starter
tests/cases/user/TypeScript-WeChat-Starter/TypeScript-WeChat-Starter
tests/cases/user/create-react-app/create-react-app
tests/cases/user/fp-ts/fp-ts
tests/cases/user/webpack/webpack
tests/cases/user/puppeteer/puppeteer
tests/cases/user/axios-src/axios-src
tests/cases/user/prettier/prettier
.eslintcache

[kjaymiller]

You're right... I think when we do #13 it may include a .gitignore that gives us exactly what we're looking for. Perhaps we wait until that PR is done.