Spec version filter for cli init

[fishmonger45]

Adds a filter of templates for users chosen specVersion. If there are no templates for that specVersion (which should not be the case) then it falls back to a custom git remote & branch.

[fishmonger45]

  it('should return a project schema object', async () => {
    reader = new IPFSReader('QmYyCCSaHLpPvZmex5ExHGdW7mavKYeiixVEyvNGwD1LLw', IPFSGateway);

    const data: any = await reader.getProjectSchema();

    expect(data.repository).toBe('https://github.com/subquery/subql-starter');
  });
});

https://github.com/wqsz7xn/subql/blob/023fb851dd084dd9f4ddcec3b123251b70d9d57a/packages/validator/src/readers/ipfs-reader.spec.ts#L12-L18

Following test is flaky

[fishmonger45]

Let me put back in the --starter flag before merging this. I don't know where it disappeared. My bad

[fishmonger45]

Added back the --starter flag so that I don't have to change a bunch of docs

[ianhe8x]

The template feature is a replacement for the original --starter. With --starter, it skips template selection. I think we should move on without --starter