This templater template will create a years worth of files from the year you want in the folder you want. Copy the raw text into an md file in Obsidian.

templater.makeYearOfFiles

<%*

// cleaner version can be made using moment.js

// format date to YYYY-MM-DD (date -> string)
function formatDate(date) {
	// https://stackoverflow.com/questions/23593052/format-javascript-date-as-yyyy-mm-dd
	var d = new Date(date),
		month = '' + (d.getMonth() + 1),
		day = '' + d.getDate(),
		year = d.getFullYear();
	if (month.length < 2) 
		month = '0' + month;
	if (day.length < 2) 
		day = '0' + day;
	return [year, month, day].join('-');
}

// get year to make files for and check if leap year
let year = (await tp.system.prompt("year?", "2021", 1))
let daysInYear;
let leapYear = parseInt(year)%4 == 0 ? daysInYear = 366 : daysInYear =  365;

// get files and folders in vault
let faf = this.app.vault.fileMap;
let fafNames = Object.keys(this.app.vault.fileMap);

// for each file and folder, check type then send to proper array
let folders = [];
let files = [];
let pushFilesAndFolders = (element) => {
	element.includes(".md") ? files.push(element) : folders.push(element+"/");
}
fafNames.forEach(pushFilesAndFolders)
folders.unshift("-----Pick folder to place files in-----") // add instruction to userFolder suggestion

// get folder to make files in
let userFolder;
while(userFolder == null || userFolder.length < 1 || userFolder.contains("-----Pick folder to place files in-----")){
	userFolder = (await tp.system.suggester(
	((item) => item),
	folders, 1))
}

// make array with names of files to create
let start = "01/01/"+year;
let end = "12/31/"+year;
let date = new Date(start);
let fileNames = [];
let getFileNames = () => {
	for(let i = 0; i<daysInYear;i++){	
	fileNames.push(formatDate(date));
	date.setDate(date.getDate() +1)
	}
}
getFileNames()

let confirm = (await tp.system.suggester(
	((item) => item),
	["ARE YOU SURE...CLICK ME (OTHERWISE HIT ESC)"], 1))


for(let i = 0;i<fileNames.length;i++){
		let filePath = userFolder + fileNames[i] + '.md';
		let userFile = this.app.vault.getAbstractFileByPath(filePath);
		if(!userFile) {
   			userFile = await this.app.vault.create(filePath, '');
		}
	}
%>