feat: add configurable timeout

[dgunzy]

Signed-off-by: Daniel Guns danbguns@gmail.com

Add configurable --timeout flag for Apache request timeout

What changed

• forevd/apache/httpd.conf — replaced hardcoded Timeout 10 with
  Timeout {{ timeout }} and moved the httpd_include block to render
  after the Timeout directive.

• forevd/__main__.py — added --timeout CLI option (int, default 10,
  env var FOREVD_TIMEOUT) and wired it through to the config dict.

• tests/test_apache_template.py — new; 8 tests covering template
  rendering for various timeout values and the httpd_include ordering.

• tests/test_main.py — new; 10 tests covering the full precedence
  chain via Click's CliRunner.

Precedence (highest → lowest)

Tier	Mechanism
1	httpd_include file containing a Timeout directive (Apache last-directive-wins)
2	--timeout CLI flag
3	FOREVD_TIMEOUT environment variable
4	Built-in default — 10 s

Why httpd_include wins over --timeout

Apache uses the last occurrence of a repeated global directive.
By rendering httpd_include after Timeout {{ timeout }} in the
template, any Timeout line in the user's include file naturally
shadows the flag value — no special logic required.

[bradpenney]

Looks good!