dmd, ldc, gdc, dub: add page (#11321)

* dmd: Add page

* dmd: Update page

* ldc: Add page

* gdc: Add page

* dub: Add page

* ldc: Update page

* Update dmd.md

fix lint error

* Update dub.md

fix linter error

* Update gdc.md

fix linter error

* Update ldc.md

fix linter error

* Update pages/linux/dub.md

Co-authored-by: pixel <pixel+github@chrissx.de>

* Update pages/linux/gdc.md

Co-authored-by: pixel <pixel+github@chrissx.de>

* Update dmd.md

* dmd, dub, gdc, ldc: move to common

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* Update pages/common/dmd.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/dmd.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/dub.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/dub.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/dub.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/ldc.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/ldc.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/ldc.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/ldc.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Update pages/common/ldc.md

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* Apply suggestions from code review

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* dmd, dub, gdc, ldc: update pages

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* dub: fix typo

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

---------

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: pixel <pixel+github@chrissx.de>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/common/dmd.md

@@ -0,0 +1,24 @@
+# dmd
+
+> Official D compiler.
+> More information: <https://dlang.org/dmd.html>.
+
+- Build a D source file:
+
+`dmd {{path/to/source.d}}`
+
+- Generate code for all template instantiations:
+
+`dmd -allinst`
+
+- Control bounds checking:
+
+`dmd -boundscheck={{on|safeonly|off}}`
+
+- List information on all available checks:
+
+`dmd -check={{h|help|?}}`
+
+- Turn on colored console output:
+
+`dmd -color`