feat(core): initialize SQLite off-main-thread (#18401)

This gets SQLite off the flamegraph and reduces initialization time by
somewhere between 0.2ms and 0.5ms. In addition, I took the opportunity
to move all the cache management code to a single place and reduce
duplication. While the PR has a net gain of lines, much of that is just
being a bit more deliberate with how we're recovering from errors.

The existing caches had various policies for dealing with cache
corruption, so I've unified them and tried to isolate the decisions we
make for recovery in a single place (see `open_connection` in
`CacheDB`). The policy I chose was:

 1. Retry twice to open on-disk caches
 2. If that fails, try to delete the file and recreate it on-disk
3. If we fail to delete the file or re-create a new cache, use a
fallback strategy that can be chosen per-cache: InMemory (temporary
cache for the process run), BlackHole (ignore writes, return empty
reads), or Error (fail on every operation).

The caches all use the same general code now, and share the cache
failure recovery policy.

In addition, it cleans up a TODO in the `NodeAnalysisCache`.

1 files changed, 4 insertions, 3 deletions

diff --git a/cli/tests/integration/watcher_tests.rs b/cli/tests/integration/watcher_tests.rs
index 44907b912..edc7fc842 100644
--- a/cli/tests/integration/watcher_tests.rs
+++ b/cli/tests/integration/watcher_tests.rs
@@ -6,6 +6,7 @@ use std::io::BufRead;
 use test_util as util;
 use test_util::assert_contains;
 use test_util::TempDir;
+use util::DenoChild;
 
 use util::assert_not_contains;
 
@@ -80,7 +81,7 @@ fn read_line(s: &str, lines: &mut impl Iterator<Item = String>) -> String {
   lines.find(|m| m.contains(s)).unwrap()
 }
 
-fn check_alive_then_kill(mut child: std::process::Child) {
+fn check_alive_then_kill(mut child: DenoChild) {
   assert!(child.try_wait().unwrap().is_none());
   child.kill().unwrap();
 }
@@ -1244,8 +1245,8 @@ fn run_watch_dynamic_imports() {
     .spawn()
     .unwrap();
   let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
-  assert_contains!(stderr_lines.next().unwrap(), "No package.json file found");
-  assert_contains!(stderr_lines.next().unwrap(), "Process started");
+  wait_contains("No package.json file found", &mut stderr_lines);
+  wait_contains("Process started", &mut stderr_lines);
 
   wait_contains(
     "Hopefully dynamic import will be watched...",