Feature Request: add unique cookie prefix or allow setting

### What type of suggestion are you making?

Modification of existing behavior

### What is the problem that your feature request solves?

I am running this along with a few dozen other containers on a small home server with podman under one IP (using different port numbers for each service). It works pretty well aside from one issue: session cookie names often conflict causing frequent log outs.

archivebox uses generic names "sessionid" and "csrftoken".

### What is your proposed solution?

Would it be possible to append a unique prefix to the session ID cookie name (ie: 'archivebox_sessionid') or allow us to add a prefix using an environment variable?

### What hacks or alternative solutions have you tried to solve the problem?

Searched around documentation trying to find a way to set a prefix for the session cookies and could not find anything. Nor could I find any suggestions pertaining to this issue.

### Share the entire output of the `archivebox version` command for the current verison you are using.

```shell
0.7.3
ArchiveBox v0.7.3 COMMIT_HASH=069aabc BUILD_TIME=2024-12-15 09:54:03 1734256443
IN_DOCKER=True IN_QEMU=False ARCH=x86_64 OS=Linux PLATFORM=Linux-6.11.0-18-generic-x86_64-with-glibc2.36 PYTHON=Cpython
FS_ATOMIC=True FS_REMOTE=False FS_USER=0:0 FS_PERMS=644
DEBUG=False IS_TTY=True TZ=UTC SEARCH_BACKEND=ripgrep LDAP=False

[i] Dependency versions:
√ PYTHON_BINARY v3.11.11 valid /usr/local/bin/python3.11
√ SQLITE_BINARY v2.6.0 valid /usr/local/lib/python3.11/sqlite3/dbapi2.py
√ DJANGO_BINARY v3.1.14 valid /usr/local/lib/python3.11/site-packages/django/__init__.py
√ ARCHIVEBOX_BINARY v0.7.3 valid /usr/local/bin/archivebox

√ CURL_BINARY v8.10.1 valid /usr/bin/curl
√ WGET_BINARY v1.21.3 valid /usr/bin/wget
√ NODE_BINARY v20.18.1 valid /usr/bin/node
√ SINGLEFILE_BINARY v1.1.54 valid ./node_modules/single-file-cli/single-file
√ READABILITY_BINARY v0.0.11 valid ./node_modules/readability-extractor/readability-extractor
√ MERCURY_BINARY v1.0.0 valid ./node_modules/@postlight/parser/cli.js
√ GIT_BINARY v2.39.5 valid /usr/bin/git
√ YOUTUBEDL_BINARY v2024.12.13 valid /usr/local/bin/yt-dlp
√ CHROME_BINARY v131.0.6778.33 valid /usr/bin/chromium-browser
√ RIPGREP_BINARY v13.0.0 valid /usr/bin/rg

[i] Source-code locations:
√ PACKAGE_DIR 24 files valid ./archivebox
√ TEMPLATES_DIR 3 files valid ./archivebox/templates
- CUSTOM_TEMPLATES_DIR - disabled None

[i] Secrets locations:
- CHROME_USER_DATA_DIR - disabled None
- COOKIES_FILE - disabled None
```

### How badly do you want this new feature?

- [ ] It's an urgent deal-breaker, I can't live without it
- [ ] It's important to add it in the near-mid term future
- [x] It would be nice to have eventually
- [ ] I'm willing to [start a PR](https://github.com/ArchiveBox/ArchiveBox#archivebox-development) to develop this myself
- [ ] I have [donated money](https://github.com/ArchiveBox/ArchiveBox/wiki/Donations) to go towards fixing this issue

### Mini Survey

- [x] I like ArchiveBox so far / would recommend it to a friend
- [ ] I've had a lot of difficulty getting ArchiveBox set up
- [ ] I would pay $10/mo for a hosted version of ArchiveBox if it had this feature