Search: Add `square:yes` and `landscape:yes` filters

[PiotrKrzyzek]

Photoprism has a wonderful set of search and filter options, though we're not able to filter photos (and others) well by the items orientation. Currently, the only orientation related filter option is 'portrait` which, if set, will give us all portrait oriented (where height is bigger than width) assets.

Though there is no landscape filter.

As referenced in my previous bug report / question, portrait is a BOOLEAN filter, meaning simply true or false where the default is false meaning: simply not set.

As false here means not set and not meaning "NOT", thus I propose we have either-or of the following two filter options added:

• orientation
• landscape

The landscape filter would do the exact same thing as portrait (a boolean filter) except for landscape oriented (width greater than height) photos (and videos and whatnot).

Whereas orientation could take different options such as: 'landscape', 'portrait' and could be expanded to include more advanced filters such as 'not set', 'circle', 'upside down' and so forth.

[lastzero]

Note there is also a panorama filter, which limits results to photos/videos in landscape format with an aspect ratio of 2:1 and a minimum width of 1000 (or more):

https://github.com/photoprism/photoprism/blob/develop/internal/search/photos.go#L351

[lastzero]

Added square:yes and landscape:yes filters, in addition to the existing panorama:yes and portrait:yes search filters:

Filter	Type	Examples	Notes
fmax	decimal	fmax:1.245
fmin	decimal	fmin:1.245
lat	decimal	lat:1.245
lng	decimal	lng:1.245
chroma	number	chroma:-1 chroma:2
diff	number	diff:-1 diff:2
dist	number	dist:-1 dist:2
quality	number	quality:0 quality:3
album	string	album:"name"	single name with * wildcard
albums	string	albums:"South Africa & Birds"	can be combined with & and
camera	string	camera:canon
category	string	category:"name"
color	string	color:"name"
country	string	country:"name"
day	string	day:"name"
face	string	face:"name"
faces	string	faces:"name"
filename	string	filename:"name"
folder	string	folder:"name"
hash	string	hash:2fd4e1c67a2d
keywords	string	keywords:"name"
label	string	label:"name"
lens	string	lens:ef24
month	string	month:"name"
name	string	name:"name"
original	string	original:"name"
path	string	path:"name"
people	string	people:"name"
person	string	person:"name"
state	string	state:"name"
subject	string	subject:"name"
subjects	string	subjects:"name"
title	string	title:"name"
type	string	type:"name"
uid	string	uid:"name"
year	string	year:"name"
archived	switch	archived:yes archived:no
error	switch	error:yes error:no
favorite	switch	favorite:yes favorite:no
geo	switch	geo:yes geo:no
hidden	switch	hidden:yes hidden:no
landscape	switch	landscape:yes landscape:no
live	switch	live:yes live:no
mono	switch	mono:yes mono:no
panorama	switch	panorama:yes panorama:no
photo	switch	photo:yes photo:no
portrait	switch	portrait:yes portrait:no
primary	switch	primary:yes primary:no
private	switch	private:yes private:no
public	switch	public:yes public:no
raw	switch	raw:yes raw:no
review	switch	review:yes review:no
scan	switch	scan:yes scan:no
square	switch	square:yes square:no
stack	switch	stack:yes stack:no
stackable	switch	stackable:yes stackable:no
unsorted	switch	unsorted:yes unsorted:no
unstacked	switch	unstacked:yes unstacked:no
video	switch	video:yes video:no
after	timestamp	after:"2022-01-30 15:23:42"	taken after this date
before	timestamp	before:"2022-01-30 15:23:42"	taken before this date