Add header option per request

[theoforger]

Closes #3575.

Description

This PR adds a header option to the hurl file's [Options] field, along with the integration test for this new feature.

Note

I also regenerated the grammar.md file using the latest build of fabricereix/grammar.

[jcamiel]

Everything is perfect @theoforger ! What we could do, in another PR, is adding a variable that will be used in the additional headers:

Command line:

$ hurl --header "test: from-cli" --variable my_header=from-var tests_ok/header_option.hurl

Hurl file:

...
# in the same request
[Options]
...
header: {{my_header}}

(no issue needed as it's just code improvement)

[jcamiel]

/accept

[hurl-bot]

🕗 /accept is running, please wait for completion.

[hurl-bot]

🔨 Auto rebase from Orange-OpenSource/hurl/master succeeds, theoforger/hurl/3575-header-option-per-request now embeds these commits:

• c829d28 Update crates

[hurl-bot]

🕗 /accept is still running, please wait for completion.

[hurl-bot]

✅ Pull request merged with fast forward by jcamiel..

# List of commits merged from theoforger/hurl/3575-header-option-per-request branch into Orange-OpenSource/hurl/master branch:

• 17d8dc5 Add header option per request

[theoforger]

What we could do, in another PR, is adding a variable that will be used in the additional headers:

Command line:

$ hurl --header "test: from-cli" --variable my_header=from-var tests_ok/header_option.hurl

Hurl file:

...
# in the same request
[Options]
...
header: {{my_header}}

@jcamiel Thanks! I'll work on this next 👍

Slightly off topic: I'm taking a course this semester which requires us to get involved in an open source project. It expects us to regularly work on the project, get to know the code and the community. I've really enjoyed working with you guys so far, and I wonder if I can continue my work here? Thanks for the consideration! 😆

[jcamiel]

Yes of course @theoforger! There are the issues labelled "good first issues" (the label is more a link of "relatively easy issue" to work on, instead of "first issues"). You can look at this list.

Among them for instance:

• Allow sending empty HTTP header #3536 => should be easy as it it a part of the code that you've already work with,
• More interesting: Support ip query for getting resolved response IP #3106, HTTP version explicit assert #1706 these two introduce two new queries ip and version. Queries are a way to extract data from HTTP response and can be used in asserts or captures.
• Add base64Encode/base64Decode filter #2145 another concept is filter this ones is about adding a base64 filter
• Suggestion: add random data generation helpers #606 a little more complicated, this one proposes to add a random function. Function allow to generate data and are useful to add some dynamic to Hurl files.
• etc...

You can look of course at any other issue if you're more interested in it. Just ping me on one at I'll give you some direction f you need