feat(jstzd): print banner and progress bar while launching

[huancheng-trili]

Context

Part of JSTZ-247.
JSTZ-247

Description

Print the jstz banner and a progress bar while jstzd is loading.

Manually testing the PR

Ran jstzd locally and observed the printed lines.

$ ./jstzd run /tmp/config.json 

           __________
           \  jstz  /
            )______(
            |""""""|_.-._,.---------.,_.-._
            |      | | |               | | ''-.
            |      |_| |_             _| |_..-'
            |______| '-' `'---------'` '-'
            )""""""(
           /________\
           `'------'`
         .------------.
        /______________\

        0.1.0-alpha.0 https://github.com/jstz-dev/jstz

⠁ [████████████████████░░░░░░░░░░░░░░░░░░░░]       2/4

[codecov]

Codecov Report

Attention: Patch coverage is 71.05263% with 33 lines in your changes missing coverage. Please review.

Project coverage is 46.85%. Comparing base (91fb9ee) to head (2770eb8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/jstzd/src/task/jstzd.rs	67.02%	29 Missing and 2 partials ⚠️
crates/jstzd/src/lib.rs	90.00%	2 Missing ⚠️

Files with missing lines	Coverage Δ
crates/jstzd/src/lib.rs	56.09% <90.00%> (+33.37%)	⬆️
crates/jstzd/src/task/jstzd.rs	23.35% <67.02%> (+14.11%)	⬆️

... and 1 file with indirect coverage changes

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[ryutamago]

💪