fix(cli): add typescript as dependency

[marcosc90]

Description

Add typescript as a dependency for @stacks/cli to avoid Error: Cannot find module 'typescript' when installing and running @stacks/cli

The error occurs because ts-node has typescript as a peerDependency, and peer dependencies are not installed by default in NPM v3-v6. NPM 7 reintroduced the automatic installation of peer dependencies. The issue is no longer present on the latest NPM version.

fixes #964 #985

Type of Change

• New feature
• Bug fix
• API reference/documentation update
• Other

Testing information

Make sure to run the following on NPM versions <7. You can use nvm to switch to node <15, which should come with npm < 7

1. Go to packages/cli
2. run npm pack
3. make sure typescript is not installed globally (uninstall it if it is)
4. npm i -g stacks-cli-1.3.4.tgz
5. run stx, it should run correctly without throwing Error: Cannot find module 'typescript'

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[zone117x]

LGTM, thanks @marcosc90!