feat: config grouped by area, with per-provider timeouts and an update interval (#60)

Regroups the config, while there are no users to migrate:

- `ui`: icons, sourcesView, collapseGroups, loadDelay, expiryWarningDays
- `values`: revealTimeout, hideOnBlur, clipboardClear
- `storage`: cache, history
- `updates`: autoCheck (was updateCheck), autoCheckInterval (new, 24h by default), updateSources (was releases)
- `providers.timeout` (was timeout), plus `timeout` on azure, databricks and repos overriding it for that provider; `--timeout` still sets them all
- `sharing` (was share), in the config and in a repo's `.lazysecrets.yaml`

docs/config.md and the pages naming these keys are updated.

Reviewed-on: #60
Co-authored-by: Karl-Einar Bergstrøm <karl-einarb@outlook.com>

internal/ui/app/search.go

@@ -295,10 +295,10 @@ func (m *Model) crawlNext() tea.Cmd {
 }
 
 func (m *Model) crawlCmd(job crawlJob) tea.Cmd {
-	timeout := m.timeout
 	if job.src != nil {
 		p := m.providerFor(*job.src)
 		src := *job.src
+		timeout := m.timeout.of(src.Kind)
 		return func() tea.Msg {
 			ctx, cancel := contextWithTimeout(timeout)
 			defer cancel()
@@ -311,6 +311,7 @@ func (m *Model) crawlCmd(job crawlJob) tea.Cmd {
 	}
 	c := *job.container
 	p := m.providerFor(c.Source)
+	timeout := m.timeout.of(c.Source.Kind)
 	return func() tea.Msg {
 		ctx, cancel := contextWithTimeout(timeout)
 		defer cancel()