Do not run analysis on boot contracts

[hugo-stacks]

The linter currently runs on boot contracts.

It's invisible to the users because we don't collect the diagnostics. And it runs fairly quickly.
But it mean that it's run all the time for every simnet session for the same boot contracts.

We should avoid running it (both the linter and check_checker fwiw)

Reproduce / Observe

1️⃣ Add a log around here

clarinet/components/clarity-repl/src/analysis/lints/unused_data_var.rs

Line 152 in 6a45e07

diagnostics.push(diagnostic);

            println!("unused: {}", message);

2️⃣ Run clarinet check in any clarinet project (even an empty one)

3️⃣ Observe the some lints triggered in boot contracts

unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-pox-4-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-pox-4-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-pox-4-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-2-1-reward-cycle` never read
unused: data variable `first-pox-4-reward-cycle` never read
unused: data variable `cost` never modified
unused: data variable `contract-owner` never modified

[linear]

CNET-204