lighttpd: lighttpd.conf updates

[gstrauss]

lighttpd: lighttpd.conf updates

Description

• prefer lighttpd defaults
• resource tuning
• remove mod_evasive and mod_usertrack (removed from upstream)
• comment out modules not otherwise used in lighttpd.conf

Motivation and Context

modern lighttpd with bug fixes and HTTP/2 (optional)
fixes issue blocking phoenix-rtos/phoenix-rtos-ports#90

Types of changes

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: (list targets here).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work (list the PRs, preferably in merge-order).
• I will merge this PR by myself when appropriate.