support x-ipfs-path in mattser-web http response header

[tx0c]

https://docs.ipfs.tech/how-to/companion-x-ipfs-path-header/#use-cases

> Host: ipfs.io

< x-ipfs-gateway-host: ipfs-bank8-am6
< x-ipfs-path: /ipns/matters.eth/
< x-ipfs-roots: QmXJAAwaYjMEirEcxy7yyPNSs6Cv9mgjm528cV3XFEE3sW
< x-ipfs-pop: ipfs-bank8-am6

> Host: matters.eth.limo

< permissions-policy: interest-cohort=(), battery=()
< referrer-policy: strict-origin-when-cross-origin
< server: eth.limo
< [...]
< x-amz-cf-pop: CMH68-P1
< x-cache: Hit from cloudfront
< x-content-type-options: nosniff
< x-frame-options: SAMEORIGIN
< x-ipfs-path: /ipns/k51qzi5uqu5dj2va4ha12r6n9rsa4juckz05ut21q3k2xqi1t46d0umv8t0ltx/
< x-ipfs-roots: QmXJAAwaYjMEirEcxy7yyPNSs6Cv9mgjm528cV3XFEE3sW
< x-true-host: matters.eth.limo
< x-xss-protection: 1; mode=block

> GET / HTTP/2
> Host: k51qzi5uqu5dj2va4ha12r6n9rsa4juckz05ut21q3k2xqi1t46d0umv8t0ltx.ipns.4everland.io

< x-ipfs-path: /ipns/k51qzi5uqu5dj2va4ha12r6n9rsa4juckz05ut21q3k2xqi1t46d0umv8t0ltx/
< x-ipfs-roots: QmXJAAwaYjMEirEcxy7yyPNSs6Cv9mgjm528cV3XFEE3sW