doc: switch shell session code blocks to `console` type.

Dependencies

• [2] DWMH6NFB docs: mention foreman under hacking
• [3] 5DXGOH6Q statsd: add a chance to set hostname and port in hydra.conf
• [4] 4IVC7COB manual: document working on docs
• [5] 3JXCTKEC Add markdown files for documentation
• [6] BZQQZDPL doc: document how to run tests
• [7] VIJBYUAV Add the project name to declarative inputs

Change contents

• replacement in doc/manual/src/hacking.md at line 6
  [3.6924]→[3.6924:6988](∅→∅)
  − $ git clone git://github.com/NixOS/hydra.git

  − $ cd hydra
  [3.6924]

  [3.6988]
  + ```console

  + $ git clone git://github.com/NixOS/hydra.git

  + $ cd hydra

  + ```
• replacement in doc/manual/src/hacking.md at line 14
  [3.7226]→[3.7226:7242](∅→∅)
  − $ nix-shell
  [3.7024]

  [3.7242]
  + ```console

  + $ nix-shell

  + ```
• replacement in doc/manual/src/hacking.md at line 20
  [3.7280]→[3.7280:7363](∅→∅)
  − [nix-shell]$ ./bootstrap

  − [nix-shell]$ configurePhase

  − [nix-shell]$ make
  [3.7280]

  [3.7363]
  + ```console

  + [nix-shell]$ ./bootstrap

  + [nix-shell]$ configurePhase

  + [nix-shell]$ make

  + ```
• replacement in doc/manual/src/hacking.md at line 29
  [2.214]→[2.214:234](∅→∅)
  − $ foreman start
  [2.214]

  [2.234]
  + ```console

  + $ foreman start

  + ```
• replacement in doc/manual/src/hacking.md at line 35
  [3.7430]→[3.7430:7462](∅→∅)
  − $ ./src/script/hydra-server
  [3.7430]

  [3.0]
  + ```console

  + $ ./src/script/hydra-server

  + ```
• replacement in doc/manual/src/hacking.md at line 41
  [3.53]→[3.53:374](∅→∅)
  − [nix-shell]$ make check

  − [nix-shell]$ # to run as many tests as you have cores:

  − [nix-shell]$ make check YATH_JOB_COUNT=$NIX_BUILD_CORES

  − [nix-shell]$ # or run yath directly:

  − [nix-shell]$ yath test

  − [nix-shell]$ # to run as many tests as you have cores:

  − [nix-shell]$ yath test -j $NIX_BUILD_CORES
  [3.53]

  [3.374]
  + ```console

  + [nix-shell]$ make check

  + [nix-shell]$ # to run as many tests as you have cores:

  + [nix-shell]$ make check YATH_JOB_COUNT=$NIX_BUILD_CORES

  + [nix-shell]$ # or run yath directly:

  + [nix-shell]$ yath test

  + [nix-shell]$ # to run as many tests as you have cores:

  + [nix-shell]$ yath test -j $NIX_BUILD_CORES

  + ```
• replacement in doc/manual/src/hacking.md at line 69
  [2.358]→[2.358:408](∅→∅)
  − $ nix-build release.nix -A build.x86_64-linux
  [2.358]
  + ```console

  + $ nix-build release.nix -A build.x86_64-linux

  + ```
• replacement in doc/manual/src/installation.md at line 79
  [3.10324]→[3.10324:10385](∅→∅)
  − createuser -S -D -R -P hydra

  − createdb -O hydra hydra
  [3.10324]

  [3.10385]
  + ```console

  + createuser -S -D -R -P hydra

  + createdb -O hydra hydra

  + ```
• replacement in doc/manual/src/installation.md at line 91
  [3.10723]→[3.10723:10841](∅→∅)
  − export HYDRA_DBI="dbi:Pg:dbname=hydra;host=dbserver.example.org;user=hydra;"

  − export HYDRA_DATA=/var/lib/hydra
  [3.10723]

  [3.10841]
  + ```console

  + export HYDRA_DBI="dbi:Pg:dbname=hydra;host=dbserver.example.org;user=hydra;"

  + export HYDRA_DATA=/var/lib/hydra

  + ```
• replacement in doc/manual/src/installation.md at line 98
  [3.10915]→[3.10915:10963](∅→∅)
  − dbserver.example.org:*:hydra:hydra:password
  [3.10915]

  [3.10963]
  + ```

  + dbserver.example.org:*:hydra:hydra:password

  + ```
• replacement in doc/manual/src/installation.md at line 108
  [3.11166]→[3.11166:11181](∅→∅)
  − hydra-init
  [3.11166]

  [3.11181]
  + ```console

  + hydra-init

  + ```
• replacement in doc/manual/src/installation.md at line 115
  [3.11310]→[3.11310:11445](∅→∅)
  − $ hydra-create-user alice --full-name 'Alice Q. User' \

  − --email-address 'alice@example.org' --password foobar --role admin
  [3.11310]

  [3.11445]
  + ```console

  + $ hydra-create-user alice --full-name 'Alice Q. User' \

  + --email-address 'alice@example.org' --password foobar --role admin

  + ```
• replacement in doc/manual/src/installation.md at line 128
  [3.11661]→[3.11661:11676](∅→∅)
  − hydra-init
  [3.11661]

  [3.11676]
  + ```console

  + hydra-init

  + ```
• replacement in doc/manual/src/installation.md at line 137
  [3.11751]→[3.11751:11768](∅→∅)
  − hydra-server
  [3.11751]

  [3.11768]
  + ```console

  + hydra-server

  + ```
• replacement in doc/manual/src/installation.md at line 175
  [3.12891]→[3.12891:12943](∅→∅)
  − using_frontend_proxy 1

  − base_uri example.com
  [3.12891]

  [3.12943]
  + ```

  + using_frontend_proxy 1

  + base_uri example.com

  + ```
• replacement in doc/manual/src/projects.md at line 223
  [3.32657]→[3.32657:32696](∅→∅)
  − $ nix-build release.nix -A tarball
  [3.32657]

  [3.32696]
  + ```console

  + $ nix-build release.nix -A tarball

  + ```
• replacement in doc/manual/src/projects.md at line 235
  [3.33015]→[3.33015:33063](∅→∅)
  − $ nix-build -I ~/src release.nix -A tarball
  [3.33015]

  [3.33063]
  + ```console

  + $ nix-build -I ~/src release.nix -A tarball

  + ```
• replacement in doc/manual/src/projects.md at line 241
  [3.33113]→[3.33113:33159](∅→∅)
  − $ nix-build -I ~/src release.nix -A build
  [3.33113]

  [3.33159]
  + ```console

  + $ nix-build -I ~/src release.nix -A build

  + ```