Add failure detail on html report

[lepapareil]

Actual

Proposal

[jcamiel]

I think we should revisit the way we construct our HTML report. Currently, if you run:

$ hurl --test --report-html /tmp a.hurl a.hurl a.hurl

We produce the following report:

Each of the three links is pointing to the same file. If we want to display error in the Hurl files, or if we want to have statistics for each of the files, we need to decorrelate the HTML filename with the Hurl filename (it's really the ghost of #521 which is coming back 😅).

A better way would be to use a kind of unique id (@jleverenz proposed a hash but I think a uuid would be better suited).

For instance, the following command:

$ hurl --test --report-html /tmp a.hurl a.hurl a.hurl

Would produce this structure:

/tmp
├── index.html
└── store
    ├── c7fc2dc6-86f7-4009-abfb-21f2e54599a2.html
    ├── e32206a1-67b3-4d40-b325-aaa6cf3fda7a.html
    └── eebf6799-55b0-4793-97ab-38af3fdf3bc7.html

We would not need to normalize the filename anymore, and for instance, we could also add run with the standard input:

$ echo 'HEAD https://hurl.dev' | hurl --test --report-html /tmp
$ echo 'HEAD https://hurl.dev' | hurl --test --report-html /tmp

Will just add two more files to the store:

/tmp
├── index.html
└── store
    ├── 1d785bc8-a884-476f-a306-196beffe4d36.html
    ├── c7fc2dc6-86f7-4009-abfb-21f2e54599a2.html
    ├── dc515444-55aa-4e90-8df3-3685448353ed.html
    ├── e32206a1-67b3-4d40-b325-aaa6cf3fda7a.html
    └── eebf6799-55b0-4793-97ab-38af3fdf3bc7.html

(It will also fixes issues with Windows #1285 btw)