Add ignore js flag to format subcommand

[andres-lowrie]

Updated for latest changes (from #1349)

Allows users to only format .sqlx files in case they use different formatters for js files.

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[apilaskowski]

Lets also add missing tests.

1. dataform format --help includes --ignore-js-files.
2. running dataform format --ignore-js-files formats .sqlx files without modifying .js files.

[kolina]

/gcbrun

[andres-lowrie]

Lets also add missing tests.

1. dataform format --help includes --ignore-js-files.

2. running dataform format --ignore-js-files formats .sqlx files without modifying .js files.

hey so I'm not having any luck using bazel to show me the failing tests, for example if I add the following to cli/index_help_test.ts

   test("shows help for 'format' command", async () => {
    const result = await getProcessResult(execFile(nodePath, [cliEntryPointPath, "help", "format"]));
    expect(result.exitCode).equals(0);
    const output = result.stdout;
    expect(output).to.include("Format the dataform project's files.");
    expect(output).to.include("--check");
    expect(output).to.include("Check if files are formatted correctly without modifying them.");
    expect(output).to.include("--actions");`
    expect(output).to.include("XXXXXXYYYYZZZZ");
    //                          ^
    //                          |
    //                          +--- should fail since this won't be included in the output
  });

and then I do

`bazel` test ... --test_tag_filters=-integration //cli

I get back a whole bunch of build failures but in particular I get back these lines

//cli:index_compile_test                                              NO STATUS
//cli:index_help_test                                                 NO STATUS
//cli:index_init_test                                                 NO STATUS
//cli:index_project_test                                              NO STATUS
//cli:index_run_e2e_test                                              NO STATUS

I would expect //cli:index_help_test to fail and the others to pass

😅 I don't know anything about bazel so I'm just grepping and praying, reading the BUILD files in confusion and hoping for the best here

the contributing.md has bazel test //cli:index_test but that comes back with

ERROR: no such target '//cli:index_test': target 'index_test' not declared in package 'cli' 

so I'm guessing bazel stuff changed but the docs didn't?