LI(23)P62014r2: Add EditorConfig and reformat ASN.1 and XML

See merge request li/schemas-definitions!71

Reformat the .xml and .xsd files using
	env XMLLINT_INDENT="    " xmllint --encode UTF-8 --format FILENAME.xml

Notable (non-whitespace) changes to the existing files:
- Ensure the <xml ...> header has encoding="UTF-8".
- <xs:schema ...> collapsed to one line and some attribute reordered.
- Empty tags are converted to self-closing tags. E.g.
	<xs:element name="Name" type="Type"></xs:element:>
  becomes
	<xs:element name="Name" type="Type"/>
- Some xmlns related attributes are reordered.

Per discussion with rapporteurs and Mark Canterbury.

Reformat the .xml and .xsd files:
- tabs converted to 4 spaces
- no trailing whitespace

No difference to previous when  git diff -b / --ignore-space-change

Reformat the .asn files:
- 4 space indenting, including ensuring fields line up
- no tabs
- no trailing whitespace

No difference to previous when  git diff -b / --ignore-space-change
except for removal of some trailing blank lines.

Provide .editorconfig file.

Globally, use UNIX-style formatting:
- UNIX linefeed for end of line
- Ensure files have a trailing newline.

.asn, .asn1, .xml, .xsd:
- 4 space indents (not tab)
- Trim trailing whitespace

TS 103 221-1 CR039 - Addition of Task Status extension point

See merge request li/schemas-definitions!57

TS 103 120 CR033 - Traffic Policies – Mobile Access Policy Criteria draft CR

See merge request !67

Draft TS 103 120 CR036 - Adding data categories for e-evidence

See merge request !69

TS 103 120 CR034 - Status changes in notifications

See merge request !68

TS 103 120 CR039 - Multiple Endpoint Workflow Profile

See merge request !58

TS 103 120 CR038 - AuthorisationTypeOfCase Suggested Dictionary Values

See merge request !65

TS 103 120 CR037 - Additional DeliveryAddress Value

See merge request !66

TS 102 232-6 CR009 - Simplify OID versioning

See merge request !64

TS 102 232-5 CR034 - Simplify OID versioning

See merge request !63

TS 102 232-4 CR015 - Simplify OID versioning

See merge request !62

TS 102 232-3 CR042 - Fully qualify ASN.1 imports

See merge request !61

TS 102 232-2 CR037 - Add total recipients and update references

See merge request !60

TS 102 232-1 CR102 - Session layer and ASN.1 fixes

See merge request !59

Output from LI61

See merge request !44

Maintenance/preflight checks

See merge request !45

Increase TS 103 280 versions before publication

See merge request !49

TS 103 120 CR020 - Extension of Delivery Address (Errata)

See merge request !48