feat: implement handler to create a project

[hiro-o918]

What

I made an HTTP handler to create a GCP project using a client of Cloud Resource Manager

Why

Programmatically switching projects among tests can be useful to avoid conflicting records to check.

For example:

• test case 1: testing a method inserting into dataset_foo.bar_table
• test case 2: testing a method counting the number of records in dataset_foo.bar_table

In this case, test case 2 is affected by test case 1.
To avoid this issue, we can create a project with random suffixes by the client and provide an isolated environment.
This is more flexible than providing all the schema using yaml before the tests.