feat: Add operating system module (#4109)

* docs(os): Add os module documentation

* docs(os): Add os to Default Prompt Format

* chore(os): Update config file schema

* feat(os): Add os entries and declarations

* feat(os): Add os module and config

* fix(os): Obey config.disabled

* feat(os): make variables 'Unknown'-aware

refactor(os): calculate variables in dedicated functions

* test(os): Add os module tests

* feat(os): make 'name' variable less 'Unknown'-aware

* docs(os): Add Preset configurations

docs(os): Use emoji as default

* feat(os): Use emoji as default

test(os): Use emoji as default

* fix(os): Add spaces after emoji symbols

* chore(os): Update config schema

* feat(os): Remove `bitness` variable

docs(os): Remove `bitness` variable

test(os): Remove `bitness` test

* feat(os): Add Cargo.toml upgrade caution for os_info

* refactor(os): Clarify get_symbol function

* docs(os): Mention supported operating systems and feature requests

* docs(os): Mention os_info inacurracy

* test(os): Remove `bitness` leftovers

* refactor(os): use nu_ansi_term

* refactor(os): add cfg_attr(schemars(deny_unknown_fields))

* chore(os): update config schema

* docs(os): expose details block

* feat(os): add garuda linux

* chore(os): update config schema

* feat(os): add case insensitivity

* feat(os): add symbols `IndexMap` use `os_info::Type` instead of `String`

* test(os): add clippy warn on new os_info::Type case

* leave missing case to test github tests

* test(os): re-add missing test case

* style(os): fix formatting

* docs(os): update to match os_info::Type serialization

- docs(os): add missing garuda to config

- test(os): mention docs updates in warn_on_os_info_update

docs/.vuepress/public/presets/toml/bracketed-segments.toml

@@ -109,6 +109,9 @@ format = '\[[$symbol($version)]($style)\]'
 [openstack]
 format = '\[[$symbol$cloud(\($project\))]($style)\]'
 
+[os]
+format = '\[[$symbol]($style)\]'
+
 [package]
 format = '\[[$symbol$version]($style)\]'
 

docs/.vuepress/public/presets/toml/nerd-font-symbols.toml

@@ -64,6 +64,44 @@ symbol = " "
 [nodejs]
 symbol = " "
 
+[os.symbols]
+Alpine = " "
+Amazon = " "
+Android = " "
+Arch = " "
+CentOS = " "
+Debian = " "
+DragonFly = " "
+Emscripten = " "
+EndeavourOS = " "
+Fedora = " "
+FreeBSD = " "
+Garuda = "﯑ "
+Gentoo = " "
+HardenedBSD = "ﲊ "
+Illumos = " "
+Linux = " "
+Macos = " "
+Manjaro = " "
+Mariner = " "
+MidnightBSD = " "
+Mint = " "
+NetBSD = " "
+NixOS = " "
+OpenBSD = " "
+openSUSE = " "
+OracleLinux = " "
+Pop = " "
+Raspbian = " "
+Redhat = " "
+RedHatEnterprise = " "
+Redox = " "
+Solus = "ﴱ "
+SUSE = " "
+Ubuntu = " "
+Unknown = " "
+Windows = " "
+
 [package]
 symbol = " "
 

docs/.vuepress/public/presets/toml/pastel-powerline.toml

@@ -1,5 +1,6 @@
 format = """
 [](#9A348E)\
+$os\
 $username\
 [](bg:#DA627D fg:#9A348E)\
 $directory\
@@ -28,12 +29,20 @@ $time\
 # Disable the blank line at the start of the prompt
 # add_newline = false
 
-# You can also replace your username with a neat symbol like  to save some space
+# You can also replace your username with a neat symbol like   or disable this
+# and use the os module below
 [username]
 show_always = true
 style_user = "bg:#9A348E"
 style_root = "bg:#9A348E"
 format = '[$user ]($style)'
+disabled = false
+
+# An alternative to the username module which displays a symbol that
+# represents the current operating system
+[os]
+style = "bg:#9A348E"
+disabled = true # Disabled by default
 
 [directory]
 style = "bg:#DA627D"

docs/.vuepress/public/presets/toml/plain-text-symbols.toml

@@ -103,6 +103,44 @@ symbol = "ml "
 [opa]
 symbol = "opa "
 
+[os.symbols]
+Alpine = "alp "
+Amazon = "amz "
+Android = "andr "
+Arch = "rch "
+CentOS = "cent "
+Debian = "deb "
+DragonFly = "dfbsd "
+Emscripten = "emsc "
+EndeavourOS = "ndev "
+Fedora = "fed "
+FreeBSD = "fbsd "
+Garuda = "garu "
+Gentoo = "gent "
+HardenedBSD = "hbsd "
+Illumos = "lum "
+Linux = "lnx "
+Macos = "mac "
+Manjaro = "mjo "
+Mariner = "mrn "
+MidnightBSD = "mid "
+Mint = "mint "
+NetBSD = "nbsd "
+NixOS = "nix "
+OpenBSD = "obsd "
+openSUSE = "osuse "
+OracleLinux = "orac "
+Pop = "pop "
+Raspbian = "rasp "
+Redhat = "rhl "
+RedHatEnterprise = "rhel "
+Redox = "redox "
+Solus = "sol "
+SUSE = "suse "
+Ubuntu = "ubnt "
+Unknown = "unk "
+Windows = "win "
+
 [package]
 symbol = "pkg "